1-Azabicyclo(3.2.0)hept-2-ene-2-carboxylic acid, 3-((2-(acetylamino)ethenyl)sulfinyl)-6-(1-hydroxy-1-methylethyl)-7-oxo-, (5R-(3(R*(E)),5alpha,6beta))- 76025-73-5 C 19393 H(2) C-19393 H(2) Carpetimycin A