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-[(2-methyl-4-pyrrolidin-1-ylphenyl)methylidene]-3-prop-2-ynyl-1,3-thiazolidine-2,4-dione .
user
C18H18N2O2S
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