Using CC(C)(C)OC(=O)N[C@@H](COc1cccc(-c2ccccc2)c1N)C(=O)O to produce CC(C)(C)OC(=O)N[C@H]1COc2cccc(-c3ccccc3)c2NC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.