label: ETHYL 5-((5-ETHOXYCARBONYL-4-METHYL-3-NITROTHIOPHEN-2-YL)DISULFANYL)-3-METHYL-4-NITROTHIOPHENE-2-CARBOXYLATE
label_lc: ethyl 5-((5-ethoxycarbonyl-4-methyl-3-nitrothiophen-2-yl)disulfanyl)-3-methyl-4-nitrothiophene-2-carboxylate