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-[[3,3,3',3'-tetramethyl-5'-(oxiran-2-ylmethoxymethyl)-1,1'-spirobi[2H-indene]-5-yl]methoxymethyl]oxirane into molecular formula.
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C29H36O4
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