Using COc1cccc(CNC(=O)C(NC(=O)[C@H](CC(C)C)NOCc2ccccc2)C(=O)O)c1 to produce COc1cccc(CNC(=O)C2NC(=O)C(CC(C)C)N(OCc3ccccc3)C2=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.