You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 2-[[6,6,12,12-tetramethyl-8-(2-methylanilino)indeno[1,2-b]fluoren-2-yl]amino]benzoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C39H36N2O2
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