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Under IUPAC nomenclature, a molecule named 6-[[6-[(3R)-3-(dimethylamino)pyrrolidine-1-carbonyl]thieno[2,3-d]pyrimidin-2-yl]amino]-8-methylspiro[2H-imidazo[1,5-a]pyridine-3,1'-cyclohexane]-1,5-dione is given. What is its corresponding molecular formula?
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C26H31N7O3S
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