3,5-Pyridinedicarboxylic acid, 1,4-dihydro-2,6-dimethyl-4-(2-nitrophenyl)-1-phenyl-, diethyl ester 74979-70-7 Diethyl 2,6-dimethyl-4-(2-nitrophenyl)-1-phenyl-1,4-dihydro-3,5-pyridinedicarboxylate