You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[1-(2,2-difluoro-2-phenylacetyl)pyrrolidin-3-yl]-N-(imidazo[1,2-a]pyridin-7-ylmethyl)benzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H24F2N4O2
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