Using CC(C)(C)OC(=O)[C@@H]1CCCN2CCC[C@H](NC(=O)CCc3ccccc3)C(=O)N12, CC(C)(C)OC(=O)[C@@H]1CCCN2CCC[C@H](N)C(=O)N12 to produce CC(C)(C)OC(=O)[C@@H]1CCCN2C(=O)CC[C@H](NC(=O)CCc3ccccc3)C(=O)N12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.