1-[(2,6-difluorophenyl)methyl]-5-(2-fluoro-3-methoxyphenyl)-6-methyl-3-[(2R)-4-methyl-2-methylaminopentyl]pyrimidine-2,4-dione 1-[(2,6-difluorophenyl)methyl]-5-(2-fluoro-3-methoxy-phenyl)-6-methyl-3-[(2R)-4-methyl-2-methylamino-pentyl]pyrimidine-2,4-dione 1-(2,6-difluorobenzyl)-5-(2-fluoro-3-methoxy-phenyl)-6-methyl-3-[(2R)-4-methyl-2-methylamino-pentyl]pyrimidine-2,4-quinone