You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 3-[1-(4-ethylphenyl)propylidene]pyrrolidine-2,5-dione into SMILES representation.
user
CCC(=C1CC(=O)NC1=O)C1=CC=C(CC)C=C1
assistant