Using O=C(O)c1cc(Cl)nnc1Cl, CC(C)(C)c1ccc(N)cc1 to produce CC(C)(C)c1ccc(NC(=O)c2cc(Cl)nnc2Cl)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.