title: Crystal and molecular structure of a synthetic compound related to the penicillins and cephalosporins, 3-benzyl 7-t-butyl 2,2-dimethyl-8-oxo-4-thia-1-aza-6 H-bicyclo(4.2.0)octane-3,7 -dicarboxylate.
mesh_terms: D000577:Amides; D001372:Aza Compounds; D001593:Benzyl Compounds; D002511:Cephalosporins; D003998:Dicarboxylic Acids; D007769:Lactams; D008745:Methylation; D008956:Models, Chemical; D010406:Penicillins; D013237:Stereoisomerism; D013329:Structure-Activity Relationship; D014961:X-Ray Diffraction
chemical_list: D000577:Amides; D001372:Aza Compounds; D001593:Benzyl Compounds; D002511:Cephalosporins; D003998:Dicarboxylic Acids; D007769:Lactams; D010406:Penicillins