pivaloyloxymethyl ester carboxamidine penicillanic acid ester 2,2-dimethylpropanoyloxymethyl (2S,5S,6R)-6-(azepan-1-ylmethylideneamino)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate 439.214 439.571 C21H33N3O5S CC1([C@@H](N2[C@@H](S1)[C@@H](C2=O)N=CN3CCCCCC3)C(=O)OCOC(=O)C(C)(C)C)C CHEBI:94655 InChI=1S/C21H33N3O5S/c1-20(2,3)19(27)29-13-28-18(26)15-21(4,5)30-17-14(16(25)24(15)17)22-12-23-10-8-6-7-9-11-23/h12,14-15,17H,6-11,13H2,1-5H3/t14-,15+,17+/m1/s1 LINCS:LSM-5651 NPGNOVNWUSPMDP-VYDXJSESSA-N chebi_ontology