You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named [(8R,9R,10R,13S,14S)-10,13-dimethyl-6,17-dioxo-2,3,4,5,7,8,9,11,12,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl] azetidine-3-carboxylate by IUPAC nomenclature, provide its molecular formula.
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C23H33NO4
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