You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (6S)-4,8-bis[3,5-bis(trifluoromethyl)phenyl]-2,10-ditert-butyl-3,9-dimethoxy-6-methyl-6-(1-naphthalen-1-ylethyl)-5,7-dihydro-1H-benzo[d][2]benzazepin-6-ium-1-ylium by IUPAC nomenclature, provide its molecular formula.
user
C53H49F12NO2+2
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