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 lithium;[(3R,5S,6S,8R,9S,10S,13R,14R,17R)-6-ethyl-3-hydroxy-10,13-dimethyl-17-[(2R)-4-sulfamoylbutan-2-yl]-1,2,3,4,5,6,7,8,9,11,12,15,16,17-tetradecahydrocyclopenta[a]phenanthren-14-yl]azanide is given. What is its corresponding molecular formula?
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C25H45LiN2O3S
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