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 (E,6R)-2-methyl-6-[(5R,10S,13R,14R,17R)-4,4,10,13,14-pentamethyl-3,7-dioxo-2,5,6,11,12,15,16,17-octahydro-1H-cyclopenta[a]phenanthren-17-yl]hept-2-enal .
user
C30H44O3
assistant