oxolanes penems faropenem (5R)-6-(1-hydroxyethyl)-7-oxo-3-[(2R)-tetrahydrofuran-2-yl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 285.067 285.31724 6-(1-hydroxyethyl)-2-[(2R)-tetrahydrofuran-2-yl]-2,3-didehydropenam-3-carboxylic acid C12H15NO5S CHEBI:51788 HGGAKXAHAYOLDJ-YZJVMBJSSA-N InChI=1S/C12H15NO5S/c1-5(14)7-10(15)13-8(12(16)17)9(19-11(7)13)6-3-2-4-18-6/h5-7,11,14H,2-4H2,1H3,(H,16,17)/t5?,6-,7?,11-/m1/s1 [H][C@@]1(CCCO1)C1=C(N2C(=O)C(C(C)O)[C@@]2([H])S1)C(O)=O chebi_ontology