You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(Z)-3-(6-chloro-7-methyl-4-oxochromen-3-yl)-2-[(6-methoxy-1,3-benzodioxol-5-yl)methyl]prop-2-enoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H17ClO7
assistant