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 (E)-8-[(5Z,13E)-5-ethylidene-12,15-dimethyl-9-oxo-10,21,22-trioxatricyclo[15.3.1.13,7]docos-13-en-11-yl]oct-7-enamide is given. What is its corresponding molecular formula?
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C31H49NO5
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