Using OC[C@@H]1CCCN1, O=C(O)CCC(=O)NCCCN1CCCC1=O to produce O=C(CCC(=O)N1CCC[C@H]1CO)NCCCN1CCCC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.