4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, 6-[[(1E)-(hexahydro-1H-azepin-1-yl)methylene]amino]-3,3-dimethyl-7-oxo-, (2S,6R)- InChI=1/C15H23N3O3S/c1-15(2)11(14(20)21)18-12(19)10(13(18)22-15)16-9-17-7-5-3-4-6-8-17/h9-11,13H,3-8H2,1-2H3,(H,20,21)/b16-9+/t10-,11+,13?/m1/s rel-(2R,6S)-6-{[(1E)-azepan-1-ylmethylene]amino}-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid