You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
8-[2-butyl-4-[(E)-2-carboxy-3-(6-methoxy-1,3-benzodioxol-5-yl)prop-1-enyl]furan-3-yl]-5-methoxynaphthalene-2-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C32H30O9
assistant