SMILES: CC1([C@@H](N2[C@H](S1)[C@@H](C2=O)NC(=O)[C@@H](C3=CC=CC=C3)N=C)C(=O)O)C
Description: The molecule is a penicillin compound having a 6beta-(2R)-2-(methylideneamino)-2-phenylacetamido side-group. It is a penicillin and a penicillin allergen. It is a conjugate acid of a metampicillin(1-).