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 ethyl 2-[5-[(3-methoxy-2-propan-2-yloxyphenyl)methylidene]-2,4-dioxo-1,3-thiazolidin-3-yl]acetate .
user
C18H21NO6S
assistant