Using CCOC(=O)c1sc2nc(-c3ccccc3)nc(-c3cccc(N)c3)c2c1N to produce Nc1cccc(-c2nc(-c3ccccc3)nc3sc(C(=O)O)c(N)c23)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.