You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (3S,8R)-17-propyl-9-(pyrimidine-4-carbonyl)-2-oxa-9,17-diazatricyclo[17.4.0.03,8]tricosa-1(23),19,21-trien-18-one is given. What is its corresponding molecular formula?
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C28H38N4O3
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