You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(4-methoxyphenyl)-4-phenyl-5-(2-phenylethyl)-1,4-dihydropyrrolo[3,4-c]pyrazol-6-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H23N3O2
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