The molecule is a penicillin antibiotic having a 6beta-2-carboxy-2-phenylacetamido side-chain. It has a role as an antibacterial drug. It is a penicillin and a penicillin allergen. It is a conjugate acid of a carbenicillin(2-).
(2S,5R,6R)-6-[(2-carboxy-2-phenylacetyl)amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid