SMILES: CC1([C@@H](N2[C@H](S1)[C@@H](C2=O)NC=O)C(=O)[O-])C
Description: The molecule is a monocarboxylic acid anion that is the conjugate base of 6-formamidopenicillanic acid, formed by proton loss from the carboxy group. It is a penamcarboxylate and a monocarboxylic acid anion. It is a conjugate base of a 6-formamidopenicillanic acid.