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 (3R,5S,7R,8R,9S,10S,12S,13R,14S,17R)-3,7,12-tris(2-azidoethoxy)-10,13-dimethyl-17-[(2S)-5-trityloxypentan-2-yl]-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene .
user
C49H65N9O4
assistant