You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[4-(2,4-dimethylphenyl)piperazin-1-yl]-[1-(4-methylphenyl)-5-piperidin-4-ylpyrazol-4-yl]methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H35N5O
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