l 7 2 amino 2 carboxy ethylsulfanyl 2 2 2 dimethyl cyclopropanecarbonyl amino hept 2 enoic acid, z s 6 carboxy 6 s 2 2 dimethylcyclopropanecarboxamido hex 5 enyl l cysteine, z 7 r 2 amino 2 carboxy ethylsulfanyl 2 s 2 2 dimethyl cyclopropanecarbonyl amino hept 2 enoic acid
Combined intravenously with imipenem in order to protect it from dehydropeptidase and prolong its antibacterial effect.