You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 4-(1H-indazol-5-yl)-2-methyl-7-(pyrrolidin-1-ylmethyl)-3,4-dihydro-1H-isoquinoline by IUPAC nomenclature, provide its molecular formula.
user
C22H26N4
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