Using Nc1nc(Nc2cc(Cl)cc(Cl)c2)n[nH]1, Cc1ccc(C=O)o1 to produce Cc1ccc(CNc2nc(Nc3cc(Cl)cc(Cl)c3)n[nH]2)o1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.