(phenyl-2 ethyl)-8 <(piperidinyl-1) methyl>-3 triaza-1,3,8-spiro<4.5>decanedione-2,4
(phenyl-2 ethyl)-8 (phenylmethyl)-3 triaza-1,3,8-spiro<4.5>decanedione-2,4
3,8-Diphenethyl-1,3,8-triaza-spiro[4.5]decane-2,4-dione
(phenyl-2 ethyl)-8 <(piperidinyl-1)-2 ethyl>-3 triaza-1,3,8 spiro<4.5>decanedione-2,4
8-Phenethyl-3-(3-piperidin-1-yl-propyl)-1,3,8-triaza-spiro[4.5]decane-2,4-dione