Butanoic acid, 4-​[[(1R)​-​2-​[5-​(2-​fluoro-​3-​methoxyphenyl)​-​3-​[[2-​fluoro-​6-​(trifluoromethyl)​phenyl]​methyl]​-​3,​6-​dihydro-​4-​methyl-​2,​6-​dioxo-​1(2H)​-​pyrimidinyl]​-​1-​phenylethyl]​amino]​-