You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(3R)-3-[[6-(N-methylanilino)pyridazin-3-yl]methyl]piperidin-1-yl]-(6-pyrazol-1-ylpyridin-3-yl)methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H27N7O
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