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 N,N-dimethyl-2-(1-phenyl-1-pyridin-2-ylethoxy)ethanamine;(7R,8R,9S,13S,14S,17R)-17-ethynyl-17-hydroxy-7,13-dimethyl-1,2,4,6,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one;oxirane is given. What is its corresponding molecular formula?
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C40H54N2O4
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