You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [6,6-dimethyl-11-oxo-8-(2,3,4-trihydroxybutoxy)naphtho[2,3-b][1]benzofuran-3-yl] N-methyl-N-phenylcarbamate by IUPAC nomenclature, provide its molecular formula.
user
C30H29NO8
assistant