IUPAC:1,3-dimethyl-7-{2-oxo-2-[2-oxo-8-(2-phenylethyl)-1-oxa-3,8-diazaspiro[4.5]decan-3-yl]ethyl}-2,3,6,7-tetrahydro-1H-purine-2,6-dione
IUPAC:1,3-dimethyl-7-{2-oxo-2-[2-oxo-8-(2-phenylethyl)-1-oxa-3,8-diazaspiro[4.5]decan-3-yl]ethyl}-2,3,6,7-tetrahydro-1H-purine-2,6-dione