C33H32N6O5S
p-methoxybenzyl (5R*,6S*)-2-<1-(2-hydroxyethyl)-1H-tetrazol-5-ylthiomethyl>-6-<(4S*)-4-methyl-2-oxo-1,3-dioxolan-4-yl>penem-3-cerboxylate
((2R,3S)-3-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-2-{2-[1-(2-hydroxy-ethyl)-1H-tetrazol-5-ylsulfanyl]-acetylsulfanyl}-4-oxo-azetidin-1-yl)-(triphenyl-λ5-phosphanylidene)-acetic acid 4-methoxy-benzyl ester