(+)-3R-N-Monomethylamino-4c-phenyl-4t-ethoxycarbonylcyclohexene-1 (+)-Nortilidine 3-Cyclohexene-1-carboxylic acid, 2-(methylamino)-1-phenyl-, ethyl ester, trans-(+)- 37815-44-4 Ethyl trans-(+)-2-(methylamino)-1-phenyl-3-cyclohexene-1-carboxylate