You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 2-(4-fluorophenyl)-5-[2-(1H-imidazol-5-yl)ethyl]-4-methyl-1H-pyrazolo[4,3-c]pyridine-3,6-dione ?
user
C18H16FN5O2
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