You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named (2S,3S,5R,6R)-2-[(2R,3S,4S,6S)-6-[(2R,3S,4S,6S)-6-[(2R,3S,4S,6R)-6-[[(3S,5R,8R,9S,10S,12R,13S,14S,17R)-12,14-dihydroxy-10,13-dimethyl-17-(5-oxo-2H-furan-3-yl)-1,2,3,4,5,6,7,8,9,11,12,15,16,17-tetradecahydrocyclopenta[a]phenanthren-3-yl]oxy]-4-hydroxy-2-methyloxan-3-yl]oxy-4-hydroxy-2-methyloxan-3-yl]oxy-4-hydroxy-2-methyloxan-3-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-one is given. What is its corresponding molecular formula?
user
C47H72O19
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