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,3S,4S,5R,6R)-6-[[(3S,4aR,6aR,6bS,7R,8S,8aR,9R,10R,12aS,14aR,14bR)-9-acetyloxy-7,8-dihydroxy-8a-(hydroxymethyl)-4,4,6a,6b,11,11,14b-heptamethyl-10-[(E)-2-methylbut-2-enoyl]oxy-1,2,3,4a,5,6,7,8,9,10,12,12a,14,14a-tetradecahydropicen-3-yl]oxy]-4-[(2S,3R,4R,5S)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]oxy-3-hydroxy-5-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxane-2-carboxylic acid .
user
C54H84O23
assistant