<unk>  is a carbapenem antibiotic marketed by Merck as INVANZ®.  It is structurally very similar to meropenem in that it possess a 1-β-methyl group.
Ertapenem
Meropenem
Biapenem
Vancomycin 
Colistin
Imipenem-Cilastatin
Cefotaxime sodium
Clindamycin hydrochloride 