You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(2,3-dihydro-1,4-benzodioxin-6-yl)-3-(3-iodophenyl)-5,6,7,8-tetrahydro-4H-pyrazolo[3,4-b]azepine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H20IN3O2
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