Using CCOC(=O)N1CCC(=O)C=C1Cc1ccc(Cl)c(Cl)c1 to produce CCOC(=O)N1CCC(=O)CC1Cc1ccc(Cl)c(Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.