5-carboxamido-2,6-diethyl-1,4-dihydro-3-(N-(3-(4-hydroxy-4-phenylpiperidinyl)propyl)carboxamido)-4-(4-nitrophenyl)
5-carboxamido-2,6-diethyl-1,4-dihydro-3-(n-(3-(4-hydroxy-4-phenylpiperidinyl)propyl)carboxamido)-4-(4-nitrophenyl)