You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (3S,4R,10R,13R,15R)-17-[(E,5R)-5-[(2R,4S)-4-hydroxy-3-[(2S,5R)-4-hydroxy-3,5-dimethoxyoxan-2-yl]oxy-5-(hydroxymethyl)oxolan-2-yl]oxy-6-methylhept-3-en-2-yl]-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-3,4,6,15-tetrol .
user
C39H66O13
assistant