Synonyms: Pyrrolidine,1-[[7-methoxy-8-oxo-3-[[(1,2,5,6-tetrahydro-2-methyl-5,6-dioxo-1,2,4-triazin-3-yl)thio]methyl]-5-thia-1-azabicyclo[4.2.0]oct-2-en-2-yl]carbonyl]-,S,S-dioxide, (6R-cis)-; L 659286; Pyrrolidine, 1-[[7-methoxy-5,5-dioxido-8-oxo-3-[[(1,2,5,6-tetrahydro-2-methyl-5,6-dioxo-1,2,4-triazin-3-yl)thio]methyl]-5-thia-1-azabicyclo[4.2.0]oct-2-en-2-yl]carbonyl]-,(6R-cis)-