The name/synonym for ligand BCL (curated from ChEBI, PubChem, and PDB databases):

1BACTERIOCHLOROPHYLL A(1-)
2[METHYL (3S,4S,13R,14R)-9-ACETYL-14-ETHYL-4,8,13,18-TETRAMETHYL-20-OXO-3-(3-OXO-3-{[(2E,7R,11R)-3,7,11,15-TETRAMETHYLHEXADEC-2-EN-1-YL]OXY}PROPYL)-13,14-DIHYDROPHORBINE-21-CARBOXYLATATO(3-)-KAPPA4N(23),N(24),N(25),N(26)]MAGNESATE(1-)
3BACTERIOCHLOROPHYLL A