https://github.com/xchem/fragalysis-api/blob/ae3e3f6eaeebe24fdf77a4581b2121f84ece8ecb/fragalysis_api/xcimporter/conversion_pdb_mol.py#L583-L598
fragalysis-api/fragalysis_api/xcimporter/conversion_pdb_mol.py
Lines 583 to 598 in ae3e3f6