Export of aromatic bonds to MOL file causes exception
- Dominant language
- C++
- Stars
- 406
- Forks
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- Avg merge
- 2d 11h
- Merged PRs (30d)
- 24
Description
**Describe the bug**
Export of Single Up/Down bonds to MOL file causes exception
**Steps to Reproduce**
1. Load from file: [Convert error! molfile saver unrepresentable query bond order = -1.zip](https://github.com/epam/ketcher/files/14097990/Convert.error.molfile.saver.unrepresentable.query.bond.order.-1.zip) (unzip first)
2. Try to save it to Molfile V2000
**Actual behavior**
System throws exception: Convert error! molfile saver: unrepresentable query bond: order = -1

**Expected behavior**
No exception
**Ketcher version** [e.g. v2.4.2].
- Indigo Toolkit Version 1.18.0-rc.5.0-gb21ab5ad5-wasm32-wasm-clang-12.0.0
- Ketcher Version 2.18.0-rc.2 Build at 2024-01-26; 15:56:57
- Chrome Version 120.0.6099.225 (Official Build) (64-bit)
- Win10
- Issue found while testing https://github.com/epam/Indigo/issues/1440
- Moved from https://github.com/epam/ketcher/issues/3993
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