You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
disodium;5-methyl-1-[3-(phosphonatomethoxy)-3,6-dihydro-2H-pyran-6-yl]pyrimidine-2,4-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C11H13N2Na2O7P
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