You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-methyl-9-[4-(2-methylprop-2-enyl)piperazin-1-yl]-3-phenyl-5,6,7,8-tetrahydropyrazolo[5,1-b]quinazoline into molecular formula.
user
C25H31N5
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