You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 4-[[3-[6-(2-thiophen-2-ylethyl)pyridin-2-yl]imidazo[1,2-a]pyrazin-8-yl]methyl]cyclohexan-1-amine by IUPAC nomenclature, provide its molecular formula.
user
C24H27N5S
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