(+)-(4R,5S,6S)-6-[(1R)-1-Hydro-xyethyl]-4-methyl-7-oxo-3-[[(3S,5S)-5-[(sulfamoylamino)-methyl]-3-pyrrolidinyl]thio]-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid monohydrate ; CAS # 364622-82-2 ;