You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(5R,7R,8R,9S,10S,13R,14S,17R)-17-[(2R)-4-[[(1R)-1-(5-bromothiophen-2-yl)propyl]amino]-4-oxobutan-2-yl]-10,13-dimethyl-3-oxo-1,2,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-7-yl] 2-aminoacetate is the IUPAC name of a molecule. Please give its molecular formula.
user
C32H47BrN2O4S
assistant