Using CSc1ncc2c(n1)N(c1ccc(COC3CCCCO3)cc1)C(=O)N(c1ccccc1Br)C2 to produce CSc1ncc2c(n1)N(c1ccc(CO)cc1)C(=O)N(c1ccccc1Br)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.