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

1CHLOROPHYLL A
2[(2E,7R,11R)-3,7,11,15-TETRAMETHYLHEXADEC-2-EN-1-YL (2(2)R,17S,18S)-7-ETHYL-2(1),2(2),17,18-TETRAHYDRO-2(2)-(METHOXYCARBONYL)-3,8,13,17-TETRAMETHYL-2(1)-OXO-12-ETHENYLCYCLOPENTA[AT]PORPHYRIN-18-PROPANOATO(2-)]MAGNESIUM
3CHLOROPHYLL
4(SP-4-2)-((2E,7R,11R)-3,7,11,15-TETRAMETHYL-2-HEXADECENYL (3S,4S,21R)-9-ETHENYL-14-ETHYL-21-(METHOXYCARBONYL)-4,8,13,18-TETRAMETHYL-20-OXO-3-PHORBINEPROPANOATO(2-)-KAPPAN(23),KAPPAN(24),KAPPAN(25),KAPPAN(26))-MAGNESIUM