Using COc1ccc(C(=O)Nc2ncnc3nc[nH]c23)cc1, CC(C)(C)OC(=O)CBr to produce COc1ccc(C(=O)Nc2ncnc3c2ncn3CC(=O)OC(C)(C)C)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.