[3,4,5-triacetyloxy-6-[[c-[phenylmethoxycarbonyl(phenylmethoxycarbonylamino)amino]sulfanyl-n-(1,2,3-trimethoxy-10-methylsulfanyl-9-oxo-6,7-dihydro-5h-benzo[a]heptalen-7-yl)carbonimidoyl]amino]oxan-2-yl]methyl Acetate