You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (5Z)-3-[2-(4-chlorophenyl)-2-oxoethyl]-5-[[7-ethyl-1-(2-oxo-2-piperidin-1-ylethyl)indol-3-yl]methylidene]-1,3-thiazolidine-2,4-dione .
user
C29H28ClN3O4S
assistant