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)-5-[[3-methoxy-4-(2-oxo-2-pyrrolidin-1-ylethoxy)phenyl]methylidene]-3-prop-2-enyl-2-sulfanylidene-1,3-thiazolidin-4-one .
user
C20H22N2O4S2
assistant