You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 7-(6,7-dimethoxyspiro[1H-naphthalene-2,2'-piperidine]-1'-yl)-4,4-diphenylheptan-1-amine into its molecular formula.
user
C35H44N2O2
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