You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[4-[[2-(2-hydroxypropan-2-yl)-4-methylpyridin-3-yl]amino]pyrrolo[3,2-c]pyridin-1-yl]-N,N-dimethylacetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H25N5O2
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