You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (3R,5S,8S,9R,10S,12R,13S,14S,17R)-5,12,14-trihydroxy-13-methyl-17-(5-oxo-2H-furan-3-yl)-3-[(2R,3R,4R,5S,6R)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxy-2,3,4,6,7,8,9,11,12,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthrene-10-carbaldehyde by IUPAC nomenclature, provide its molecular formula.
user
C29H42O11
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