Using CCOC(=O)CC1(CC)OCCc2c1[nH]c1c(CC)cc(Br)cc21 to produce CCc1cc(Br)cc2c3c([nH]c12)C(CC)(CCO)OCC3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.