You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (1R,3aS,5aR,5bR,7aR,8R,9E,11aR,11bR,13aR,13bR)-9-hydroxyimino-8-(hydroxymethyl)-5a,5b,8,11a-tetramethyl-1-prop-1-en-2-yl-2,3,4,5,6,7,7a,10,11,11b,12,13,13a,13b-tetradecahydro-1H-cyclopenta[a]chrysene-3a-carbaldehyde ?
user
C30H47NO3
assistant