You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1-methylimidazol-2-yl)-[1-methyl-3-(4-phenyl-1,2,4-triazol-3-yl)-6,7-dihydro-4H-pyrazolo[4,3-c]pyridin-5-yl]methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H20N8O
assistant