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 9-bromo-2-(4-ethylphenyl)-6-(3-fluoro-2-hydroxyphenyl)-3a,4,6,11,11a,11b-hexahydronaphtho[6,7-e]isoindole-1,3,7,10-tetrone .
user
C30H23BrFNO5
assistant