Using O=C1CCc2cc(OCC=CCC(=O)N(CCO)CC3CCCCC3)ccc2N1 to produce O=C1CCc2cc(OCCCCC(=O)N(CCO)CC3CCCCC3)ccc2N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.