(1)Benzothieno(3,2-b)pyridine-3-carboxylic acid, 1,4-dihydro-2-methyl-4-(2-nitrophenyl)-, methyl ester, 5,5-dioxide 1-(2-Nitrophenyl)-2-methoxycarbonyl-3-methyl-1,4-dihydrobenzothieno(3,2-b)pyridine-9,9-dioxide 105098-73-5