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Name the molecular formula for the molecule established as tert-butyl-[[(3R,7S,9R)-7,9-dimethyl-3-[2-(4-octylphenyl)ethyl]-1-oxa-4-azaspiro[4.5]decan-3-yl]methoxy]-dimethylsilane using the IUPAC nomenclature.
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C33H59NO2Si
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