You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[2-[2,2-bis(1H-indol-3-yl)ethyl]phenyl]-2-oxo-1H-quinoline-4-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C34H26N4O2
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