tert-butyl N-[2-[(4-diethylamino-2-methylphenyl)carbamoyl]-3,4-dihydro-1H-naphthalen-2-yl]carbamate tert-butyl N-[2-[(4-diethylamino-2-methyl-phenyl)carbamoyl]tetralin-2-yl]carbamate N-[2-[[(4-diethylamino-2-methylphenyl)amino]-oxomethyl]-2-tetralinyl]carbamic acid tert-butyl ester N-[2-[(4-diethylamino-2-methyl-phenyl)carbamoyl]tetralin-2-yl]carbamic acid tert-butyl ester tert-butyl N-[2-[(4-diethylamino-2-methyl-phenyl)carbamoyl]-3,4-dihydro-1H-naphthalen-2-yl]carbamate