You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule [2-methoxy-4-methyl-6-[[4-[2-(methylcarbamoyl)anilino]-5-(trifluoromethyl)pyrimidin-2-yl]amino]phenyl]phosphonic acid ?
user
C21H21F3N5O5P
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