You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as (3E,8R,9S,10R,13S,14S,16R,17R)-3-methoxyimino-10,13-dimethyl-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthrene-16,17-diol using the IUPAC nomenclature.
user
C20H31NO3
assistant