Using O=C1CCOCC1, CC(C)(C)c1cc(NC(=O)[C@@H]2CCCCCN2)no1 to produce CC(C)(C)c1cc(NC(=O)[C@@H]2CCCCCN2C2CCOCC2)no1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.