You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-[4-(cyclohexanecarbonyl)piperazin-1-yl]-8-ethyl-3,3-dimethyl-1,4-dihydropyrano[3,4-c]pyridine-5-carbonitrile The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H34N4O2
assistant