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 6-hydroxy-7-methoxy-2,8-bis(3-methylbut-2-enyl)-4a,9a-dihydro-4H-xanthene-1,3,9-trione .
user
C24H28O6
assistant