You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule nonane;octyl (4R)-4-[(3R,5S,7R,8R,9S,10S,12S,13R,14S,17R)-10,13-dimethyl-3,7,12-tri(propanoyloxy)-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]pentanoate ?
user
C50H88O8
assistant