Using COc1cc(C(O)c2ccccc2S(=O)(=O)Nc2ccccc2C)cc2c1OCO2, COC(=O)CBr to produce COC(=O)CN(c1ccccc1C)S(=O)(=O)c1ccccc1C(O)c1cc(OC)c2c(c1)OCO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.