You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[4-ethoxy-N-[(6-methyl-2,4-dioxo-1H-pyrimidin-5-yl)sulfonyl]anilino]acetic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H17N3O7S
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