4-(1-(3,4-dimethoxy-6-nitrophenyl)-2,3-epoxypropyl-1-oxocarbonyloxy)-3-oxo-2,5-diphenyl-2,3-dihydrothiophen-1,1-dioxide
4-(1-(3,4-dimethoxy-6-nitrophenyl)-2,3-epoxypropyl-1-oxocarbonyloxy)-3-oxo-2,5-diphenyl-2,3-dihydrothiophen-1,1-dioxide