epam / epam/Indigo

CIP label assigned to symmetric molecule

Open
#3,794 2 comments 0 reactions 0 assignees View on GitHub
Dominant language
C++
Stars
406
Forks
134
Avg merge
2d 11h
Merged PRs (30d)
24

Description

**Steps to Reproduce**
Following structure generates R CIP label
![image](https://user-images.githubusercontent.com/2325645/216088132-77a8fdd2-3ca0-46eb-aa20-5bc7dfc90d3d.png)
While indigo clearly reports that there is an error in stereochemistry
![image](https://user-images.githubusercontent.com/2325645/216088380-f54ffc55-bef6-420c-9d9a-ab5943d72a21.png)

**Actual behavior**
Wrong CIP label being presented

**Expected behavior**
There should be no CIP label. The molecule should also not be marked as ABS chiral at all, as it is symmetric.

**Ketcher version**
Ketcher Version 2.7.0 Build at 2023-01-31; 13:58:49

Indigo Toolkit Version 1.9.0.0-g14d7413c3-wasm32-wasm-clang-13.0.0

Contributor guide

No contributing guide indexed for this repository

Research direction

Start by reproducing the reported structure and comparing Ketcher's displayed CIP label and ABS-chiral state with Indigo Toolkit's stereochemistry error. Trace the CIP and symmetry handling used for this case, then add a regression test showing that the symmetric molecule receives no CIP label or ABS-chiral designation.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
tooling
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
35/100

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