Using Cc1ccc(N(CC(C)C)S(=O)(=O)c2ccc(OCC3CCOCC3)cc2Br)c(C)c1, O=C=O to produce Cc1ccc(N(CC(C)C)S(=O)(=O)c2ccc(OCC3CCOCC3)cc2C(=O)O)c(C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.