You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-2-[(2S)-1,2-dihydroxypropan-2-yl]-2,3-dihydrobenzo[g][1]benzofuran-4,5-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H14O5
assistant