Using CCC(=O)NCC=C1CCc2ccc3nc(CCCCc4ccccc4)oc3c21 to produce CCC(=O)NCCC1CCc2ccc3nc(CCCCc4ccccc4)oc3c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.