benzyl ((1R,2S)-2-(((3-(4-fluorophenyl)propyl)(methyl)amino)methyl)-5-(N-methylacetamido)cyclohexyl)carbamate

benzyl ((7R,8S)-8-(((3-(4-fluorophenyl)propyl)(methyl)amino)methyl)-1,4-dioxaspiro[4.5]decan-7-yl)carbamate

ethyl 2,4-dioxocyclohexane-1-carboxylate