You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (1R,4aS,9E,10aR)-5-chloro-1,4a-dimethyl-7-propan-2-yl-9-prop-2-enoxyimino-3,4,10,10a-tetrahydro-2H-phenanthrene-1-carboxylic acid .
user
C23H30ClNO3
assistant