You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-[N-[4-[(dimethylamino)methyl]phenyl]-C-phenylcarbonimidoyl]-5-nitro-1H-indol-2-ol by IUPAC nomenclature, provide its molecular formula.
user
C24H22N4O3
assistant