Using NC1CCC(=O)NC1=O, O=C1OC(=O)c2c(Cl)cccc21 to produce O=C1CCC(N2C(=O)c3cccc(Cl)c3C2=O)C(=O)N1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.