75007-70-4

5-Oxa-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid,7-[[(4-hydroxyphenyl)acetyl]amino]- 7-methoxy-3-[[(1-methyl-1H-tetrazol-5-yl)- thio]methyl]-8-oxo-,(6R,7R)-