You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named (4-methoxyphenyl)-(5-phenyl-3-quinoxalin-6-yl-3,4-dihydropyrazol-2-yl)methanone is given. What is its corresponding molecular formula?
user
C25H20N4O2
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