Using Cc1c(Br)c2c(c(C)c1NC(=O)OC(C)(C)C)CCO2, CC(=O)c1ccc(C(C)C)cc1 to produce Cc1c2c(c(C(C)(O)c3ccc(C(C)C)cc3)c(C)c1NC(=O)OC(C)(C)C)OCC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.