You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(Z)-5-[(1E)-3-chlorobuta-1,3-dienoxy]-3-[(E)-2-hydroxyethenoxy]carbonyl-5-oxopent-3-enoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C12H11ClO7
assistant