You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (5Z)-3-[(2-chlorophenyl)methyl]-5-[(6,8-dichloro-4-oxochromen-3-yl)methylidene]-1,3-thiazolidine-2,4-dione .
user
C20H10Cl3NO4S
assistant