Using NCCCO, Cc1oc(-c2cnc(Cl)cc2NC(C)C)nc1C(=O)O to produce Cc1oc(-c2cnc(Cl)cc2NC(C)C)nc1C(=O)NCCCO, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.