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Under IUPAC nomenclature, a molecule named (3S,3'S,4'S,5'R)-4'-[tert-butyl(dimethyl)silyl]oxy-5'-[[tert-butyl(dimethyl)silyl]oxymethyl]-1,1,3'-trimethylspiro[2H-[1,3]azasilolo[1,2-c]pyrimidine-3,2'-oxolane]-5,7-dione is given. What is its corresponding molecular formula?
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C25H48N2O5Si3
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