Using O=C(O)CNc1cc(Cl)cc(Cl)c1, Nc1ncnc2c1cnn2C1CCCNC1 to produce Nc1ncnc2c1cnn2C1CCCN(C(=O)CNc2cc(Cl)cc(Cl)c2)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.