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 1,8-dihydroxy-6-methyl-2-[(9R)-1,4,5-trihydroxy-2-methyl-10-oxo-9H-anthracen-9-yl]anthracene-9,10-dione using the IUPAC nomenclature.
user
C30H20O8
assistant