SMILES: CO[C@@]1([C@@H]2N(C1=O)C(=C(CS2)COC(=O)N)C(=O)O)NC(=O)CCC[C@H](C(=O)O)N
Description: The molecule is one of three naturally occurring cephamycin antibiotics, differing from the A and B forms in its carbamoyloxymethyl substituent at C-3.