1-[(2,6-difluorophenyl)methyl]-3-[(2S)-2-dimethylamino-3-phenylpropyl]-5-(2-fluoro-3-methoxyphenyl)-6-methylpyrimidine-2,4-dione 1-[(2,6-difluorophenyl)methyl]-3-[(2S)-2-dimethylamino-3-phenyl-propyl]-5-(2-fluoro-3-methoxy-phenyl)-6-methyl-pyrimidine-2,4-dione 1-(2,6-difluorobenzyl)-3-[(2S)-2-dimethylamino-3-phenyl-propyl]-5-(2-fluoro-3-methoxy-phenyl)-6-methyl-pyrimidine-2,4-quinone