Using O=C(NCCCNCCCc1ccccc1)C1=Cc2cnc3cccc(n23)S1, CO to produce CN(CCCNC(=O)C1=Cc2cnc3cccc(n23)S1)CCCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.