Using CCOC(=O)C(C)(C)Cc1nc2ccc(OC)cc2n1Cc1ccc(Br)cc1 to produce CCOC(=O)C(C)(C)Cc1nc2ccc(O)cc2n1Cc1ccc(Br)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.