68402-81-3

(6R,7R)-7-(benzoylamino)-7-methoxy-3-[[(1-methyl-1H-tetrazol-5-yl)thio]methyl]-8-oxo-5-Oxa-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid diphenylmethyl ester