Using COC(=O)C(C)Oc1ccc(N(C)c2nnc3cc(Cl)ccc3n2)cc1, CCOC(=O)C(C)(C)Br to produce CCOC(=O)C(C)(C)Oc1ccc(N(C)c2nnc3cc(Cl)ccc3n2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.