Using CC(C)(C)OC(=O)N(CCN[C@H](CC(=O)O)Cc1c[nH]c2ccccc12)CCc1ccccc1 to produce O=C(O)C[C@H](Cc1c[nH]c2ccccc12)NCCNCCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.