[(4-butan-2-ylphenyl)-(2,4-dimethoxyphenyl)methyl] N-[4-(diethylamino)-2-methylphenyl]carbamate;2-[4-[[4-(diethylamino)-2-methylphenyl]carbamoyloxy-(4-methoxyphenyl)methyl]phenoxy]ethyl 2,2-dimethylbutanoate;[1-[4-[3-(2,2-dimethylbutanoylamino)propoxy]phenyl]-1-phenylethyl] N-[4-[ethyl(2-methoxyethyl)amino]-2-methylphenyl]carbamate