You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[1-[[4-(6-phenyl-3-pyrimidin-2-yl-1,2,4-triazin-5-yl)phenyl]methyl]piperidin-4-yl]-1H-benzimidazol-2-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C32H28N8O
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