1-Azabicyclo(3.2.0)hept-2-ene-2-carboxylic acid, 3-((2-(acetylamino)ethenyl)sulfinyl)-6-(1-methyl-1-(sulfooxy)ethyl)-7-oxo-, (5R-(3(R*(E)),5alpha,6beta))- 76094-36-5 C-19393 S(2) Carpetimycin B