Using COc1ccc(S(=O)(=O)Nc2cccnc2Nc2ccc(OC(=O)CNC(=O)OC(C)(C)C)cc2)cc1 to produce COc1ccc(S(=O)(=O)Nc2cccnc2Nc2ccc(OC(=O)CN)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.