(6-((5-Fluoro-2-((3,4,5-Trimethoxyphenyl)Amino)Pyrimidin-4-yl)Amino)-2,2-Dimethyl-3-Oxo-2,3-Dihydro-4H-Pyrido(3,2-B)(1,4)Oxazin-4-Yl)Methyl Dihydrogen Phosphate
2H-pyrido(3,2-b)-1,4-oxazin-3(4H)-one, 6-((5-fluoro-2-((3,4,5-trimethoxyphenyl)amino)-4-pyrimidinyl)amino)-2,2-dimethyl-4-((phosphonooxy)methyl)-