for the following products
2-(N-Benzyl-N-methylamino)ethyl methyl 2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylate | 2-[Benzyl(methyl)amino]ethyl methyl 2,6-dimethyl-4-(3-nitrophenyl) pyridine-3,5-dicarboxylate and Dehydro nicardipine hydrochloride
