You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[[5-(2-methoxyethoxy)-1,1,1',1'-tetramethyl-3,3'-spirobi[2H-indene]-5'-yl]oxy]ethyl N-[4-[(4-acetamidophenyl)methyl]phenyl]carbamate into molecular formula.
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C42H48N2O6
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