(6R)-3-[(Acetyloxy)methyl]-7α-[[[2-[(chloroacetyl)amino]-4-thiazolyl][(Z)-methoxyimino]acetyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

[6R-[6alpha,7beta(Z)]]-3-(acetoxymethyl)-7-[[2-(chloroacetamido)thiazol-4-yl](methoxyimino)acetamido]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid