SMILES: CC1([C@@H](N2[C@H](S1)[C@@H](C2=O)NC(=O)[C@@H](C3=CC=CC=C3)N)C(=O)OCOC(=O)C(C)(C)C)C
Description: The molecule is a penicillanic acid ester that is the pivaloyloxymethyl ester of ampicillin. It is a prodrug of ampicillin. It has a role as a prodrug. It is a penicillanic acid ester and a pivaloyloxymethyl ester. It derives from an ampicillin.