You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-(cyclohexylmethyl)-5-nitropyrrolo[2,3-b]pyridine;5-nitro-1H-pyrrolo[2,3-b]pyridine .
user
C21H22N6O4
assistant