Using CC(C)CCCC(=O)O, CC(C)(C)OC(=O)N1CCNC[C@@H]1[C@@H](O)[C@@H](Cc1ccccc1)N=C(c1ccccc1)c1ccccc1 to produce CC(C)CCCC(=O)N1CCN(C(=O)OC(C)(C)C)[C@@H]([C@@H](O)[C@@H](Cc2ccccc2)N=C(c2ccccc2)c2ccccc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.