Using CCOC(=O)C1(c2ccc(-c3ccc(-c4onc(C)c4CCO)cc3)cc2)CC1, BrCC1CC1 to produce Cc1noc(-c2ccc(-c3ccc(C4(C(=O)O)CC4)cc3)cc2)c1CCOCC1CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.