You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 16-[(1-ethylpyrazol-3-yl)methylidene]-3-hydroxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-17-one by IUPAC nomenclature, provide its molecular formula.
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C25H36N2O2
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