Using COC(=O)CCCCCN(CCO[C@@H]1O[C@@H](C)[C@@H](O)[C@@H](O)[C@@H]1O)CCO[C@@H]1O[C@@H](C)[C@@H](O)[C@@H](O)[C@@H]1O to produce C[C@@H]1O[C@@H](OCCN(CCCCCC(=O)O)CCO[C@@H]2O[C@@H](C)[C@@H](O)[C@@H](O)[C@@H]2O)[C@@H](O)[C@H](O)[C@@H]1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.