You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S,3R,4R,5S,6R)-2-[7-chloro-6-[(4-ethoxyphenyl)methyl]-3,3-dimethyl-2H-1-benzofuran-4-yl]-6-(hydroxymethyl)oxane-3,4,5-triol is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H31ClO7
assistant