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 methyl 1-[[(3S,5S,6R,8S,9S,10S,13R,14S,17R)-3-[tert-butyl(dimethyl)silyl]oxy-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-6-yl]methyl]cyclobutane-1-carboxylate ?
user
C40H72O3Si
assistant