TIANFUCHEM-2H-Pyrido[3,2-b]-1,4-thiazin-3(4H)-one, 6-[[[(2S,4R)-1-[(2R)-2-hydroxy-2-(6-methoxy-1,5-naphthyridin-4-yl)ethyl]- 2-(trifluoromethyl)-4-piperidinyl]amino]methyl]-