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 (7R,8R)-10-[(3,3-dimethyloxiran-2-yl)methyl]-5,7-dihydroxy-2,2-dimethyl-8-phenyl-7,8-dihydropyrano[3,2-g]chromen-6-one .
user
C25H26O6
assistant