Using COc1cc2ncnc(Cl)c2cc1OCCCN1CCOCC1, O=C1Cc2cccnc2N1 to produce COc1cc2ncnc(C3C(=O)Nc4ncccc43)c2cc1OCCCN1CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.