3,5-Pyridinedicarboxylicacid, 1,4-dihydro-1,2,6-trimethyl-4-(2-nitrophenyl)-, diethyl ester (9CI);3,5-Pyridinedicarboxylic acid, 1,4-dihydro-1,2,6-trimethyl-4-(o-nitrophenyl)-,diethyl ester (8CI)
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