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Under IUPAC nomenclature, a molecule named 4-(2-chloro-3,4b,8a,9a-tetrahydro-[1]benzofuro[2,3-d]pyrimidin-4-yl)-N-methyl-N,2-diphenylaniline;ethane is given. What is its corresponding molecular formula?
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C33H36ClN3O
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