You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[4-methyl-1-[4,4,4-trifluoro-3-(trifluoromethyl)butanoyl]piperidin-4-yl]-7-(oxetan-3-yl)-6,8-dihydro-5H-imidazo[1,2-a]pyrazine-2-carboxamide into molecular formula.
user
C21H27F6N5O3
assistant