Using Nc1cc(C2CC2)n[nH]1, O=C=NCc1ccc(Cl)cc1Cl to produce O=C(NCc1ccc(Cl)cc1Cl)Nc1cc(C2CC2)n[nH]1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.