Using CCCCNC(=O)n1ccc2c(C=O)cccc21, c1cncc(-c2cnc3[nH]ccc3c2)c1 to produce CCCCNC(=O)n1ccc2c(C(O)c3c[nH]c4ncc(-c5cccnc5)cc34)cccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.