You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 3-bromo-5-[2-[2,6-dimethoxy-4-(methoxymethyl)phenyl]-2-oxoethyl]sulfanyl-1-(methoxymethyl)pyrazole-4-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H25BrN2O7S
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