penicillin 3,3-dimethyl-6-[[(5-methyl-3-phenyl-4-isoxazolyl)-oxomethyl]amino]-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid 401.105 401.438 C19H19N3O5S CC1=C(C(=NO1)C2=CC=CC=C2)C(=O)NC3C4N(C3=O)C(C(S4)(C)C)C(=O)O CHEBI:94315 InChI=1S/C19H19N3O5S/c1-9-11(12(21-27-9)10-7-5-4-6-8-10)15(23)20-13-16(24)22-14(18(25)26)19(2,3)28-17(13)22/h4-8,13-14,17H,1-3H3,(H,20,23)(H,25,26) LINCS:LSM-4952 UWYHMGVUTGAWSP-UHFFFAOYSA-N chebi_ontology