Using CC1(CC2(c3ccccc3)CCN(C(C)(C)c3ccc(Br)cc3)C(=O)O2)CO1, C1CCOC1 to produce CCC(C)(O)CC1(c2ccccc2)CCN(C(C)(C)c2ccc(Br)cc2)C(=O)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.