Using CC(C)(C)OC(=O)NCCOCCOCCOCCNC(=O)CC[C@H](NC(=O)OCC1c2ccccc2-c2ccccc21)C(=O)OC(C)(C)C to produce CC(C)(C)OC(=O)NCCOCCOCCOCCNC(=O)CC[C@H](N)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.