Using COCC1CN(c2ccc3nc(C(O)CCCO)sc3c2)C(=O)O1, CCN(CC)CC to produce COCC1CN(c2ccc3nc(C(O)CCCC#N)sc3c2)C(=O)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.