You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-(4-iodophenyl)-3-methoxy-1-(4-methoxyphenyl)-5,6-dihydro-4H-pyrazolo[3,4-c]pyridin-7-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H18IN3O3
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