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 4-(2-hydroxyethyl)-13,17-dimethyl-11-azapentacyclo[12.3.1.01,5.09,17.011,16]octadec-4-ene-6,18-dione is given. What is its corresponding molecular formula?
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C21H29NO3
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