Using OC1CCNCC1, O=C(O)CC1CCN(c2ccc(Cl)cc2NC(=O)c2cccc(Cl)c2)CC1 to produce O=C(Nc1cc(Cl)ccc1N1CCC(CC(=O)N2CCC(O)CC2)CC1)c1cccc(Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.