Error with Splatalogue.query_lines() for specific molecules

Hello,
I am trying to use Splatalogue.query_lines() to get line intensity data for a certain frequency range. When running the following code, I run into an error as shown below. It seems that the error only happens when the query involves '2,4-Pentadiynylidyne'. I wonder if there is a way to fix this as I would like to eventually write a code to calculate the spectrum for an arbitrary frequency range.

astropy : 3.1
astroquery : 0.3.9
```
Python 3.7.1 (default, Dec 10 2018, 22:54:23) [MSC v.1915 64 bit (AMD64)] :: Anaconda, Inc. on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> from astroquery.splatalogue import Splatalogue
gzip was not found on your system! You should solve this issue for astroquery.eso to be at its best!
On POSIX system: make sure gzip is installed and in your path!On Windows: same for 7-zip (http://www.7-zip.org)!
>>> from astropy import units as u
>>> Splatalogue.query_lines(6.7 * u.GHz, 6.8 * u.GHz)
Traceback (most recent call last):
File "C:\Users\wheey\Anaconda3\lib\site-packages\astropy\io\ascii\ui.py", line 542, in _guess
dat = reader.read(table)
File "C:\Users\wheey\Anaconda3\lib\site-packages\astropy\io\ascii\core.py", line 1189, in read
raise InconsistentTableError(errmsg)
astropy.io.ascii.core.InconsistentTableError: Number of header columns (17) inconsistent with data columns (18) at data line 494
Header values: ['Species', 'Chemical Name', 'Freq-GHz(rest frame,redshifted)', 'Freq Err(rest frame,redshifted)', 'Meas Freq-GHz(rest frame,redshifted)', 'Meas Freq Err(rest frame,redshifted)', 'Resolved QNs', 'CDMS/JPL Intensity', 'S<sub>ij</sub>μ<sup>2</sup> (D<sup>2</sup>)', 'S<sub>ij</sub>', 'Log<sub>10</sub> (A<sub>ij</sub>)', 'Lovas/AST Intensity', 'E_L (cm^-1)', 'E_L (K)', 'E_U (cm^-1)', 'E_U (K)', 'Linelist']
Data values: ['l-C5D', '2,4-Pentadiynylidyne', '6.76284200', '1.2E-6', '', '', 'J-1/2', '2-1,Ω=1/2,f', '-6.03400', '95.30165', '0.00000', '-7.54376', '', '0.00000', '0.00000', '0.22558', '0.32457', 'CDMS']

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "", line 1, in
File "C:\Users\wheey\Anaconda3\lib\site-packages\astroquery\utils\class_or_instance.py", line 25, in f
return self.fn(obj, *args, **kwds)
File "C:\Users\wheey\Anaconda3\lib\site-packages\astroquery\utils\process_asyncs.py", line 29, in newmethod
result = self._parse_result(response, verbose=verbose)
File "C:\Users\wheey\Anaconda3\lib\site-packages\astroquery\splatalogue\core.py", line 476, in _parse_result
format='basic')
File "C:\Users\wheey\Anaconda3\lib\site-packages\astropy\io\ascii\ui.py", line 368, in read
dat = _guess(table, new_kwargs, format, fast_reader)
File "C:\Users\wheey\Anaconda3\lib\site-packages\astropy\io\ascii\ui.py", line 574, in _guess
raise core.InconsistentTableError('\n'.join(lines))
astropy.io.ascii.core.InconsistentTableError:
ERROR: Unable to guess table format with the guesses listed below:
Reader:FastBasic delimiter: ':' fast_reader: {'enable': True} fill_values: [('', '0')]
Reader:Basic delimiter: ':' fast_reader: {'enable': True} fill_values: [('', '0')]
Reader:Basic delimiter: ':' fast_reader: {'enable': True} fill_values: [('', '0')]

************************************************************************
** ERROR: Unable to guess table format with the guesses listed above. **
** **
** To figure out why the table did not read, use guess=False and **
** fast_reader=False, along with any appropriate arguments to read(). **
** In particular specify the format and any known attributes like the **
** delimiter. **
************************************************************************
>>>
```

Start with Splatalogue.query_lines() and astroquery/splatalogue/core.py, especially _parse_result at the traceback location. Reproduce the 6.7–6.8 GHz query and inspect the returned row for 2,4-Pentadiynylidyne. Done means the query parses successfully and returns line data without an InconsistentTableError.

Written by the indexing model from the issue text.