You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(13S)-17-(dipropylcarbamoyl)-13-methyl-6,7,8,9,11,12,14,15-octahydrocyclopenta[a]phenanthren-3-yl] sulfamate is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H36N2O4S
assistant