penicillin pivalate ester 2,2-dimethylpropanoyloxymethyl (2S,5S,6R)-6-[[(2R)-2-amino-2-phenylacetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate 463.178 463.549 C22H29N3O6S CC1([C@@H](N2[C@@H](S1)[C@@H](C2=O)NC(=O)[C@@H](C3=CC=CC=C3)N)C(=O)OCOC(=O)C(C)(C)C)C CHEBI:94709 InChI=1S/C22H29N3O6S/c1-21(2,3)20(29)31-11-30-19(28)15-22(4,5)32-18-14(17(27)25(15)18)24-16(26)13(23)12-9-7-6-8-10-12/h6-10,13-15,18H,11,23H2,1-5H3,(H,24,26)/t13-,14-,15+,18+/m1/s1 LINCS:LSM-5767 ZEMIJUDPLILVNQ-BSXFFOKHSA-N chebi_ontology