You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[4-[(E)-3-(6-methoxy-3-methyl-1-benzofuran-2-yl)-3-oxoprop-1-enyl]-2,6-dimethylphenoxy]-2,2-dimethylpropanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H28O6
assistant