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 [(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl] (3R,4R,5R,9R,10R,13S,14S,17S)-3-hydroxy-17-[(3S)-5-[(1S)-1-hydroxy-2-methyl-2-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxypropyl]-2-oxooxolan-3-yl]-4,10,13,14-tetramethyl-2,3,5,6,9,11,12,15,16,17-decahydro-1H-cyclopenta[a]phenanthrene-4-carboxylate .
user
C42H66O17
assistant