You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N,N-diethyl-4-[2-[(7S,17R)-3-hydroxy-7,13-dimethyl-6-oxo-8,9,11,12,14,15,16,17-octahydro-7H-cyclopenta[a]phenanthren-17-yl]ethoxy]-3-methoxybenzamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C33H43NO5
assistant