Using O=[N+]([O-])c1cc(Cl)c(O)c(Cl)c1, CC(C)(C)OC(=O)CBr to produce CC(C)(C)OC(=O)COc1c(Cl)cc([N+](=O)[O-])cc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.