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 [(8R,9S,13S,14S,16R,17R)-17-acetyloxy-13-methyl-6-nitro-3-trimethylsilyloxy-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-16-yl] acetate is given. What is its corresponding molecular formula?
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C25H35NO7Si
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