Using O=C1CCCCC1, N[C@H]1CCN(C(=O)OCc2ccccc2)C1 to produce O=C(OCc1ccccc1)N1CC[C@H](NC2CCCCC2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.