Using C=CC(=O)O, Cc1cccc(Nc2ncnc3cc(N)ccc23)c1 to produce C=CC(=O)Nc1ccc2c(Nc3cccc(C)c3)ncnc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.