Using CC(C)(C)OC(=O)OC(C)(C)C, O=C(O)CCNCCC1CCCCC1 to produce CC(C)(C)OC(=O)N(CCC(=O)O)CCC1CCCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.