Using CON, CC(=O)CCc1nc2c(N)nc3ccccc3c2n1CC(C)(C)O to produce CON=C(C)CCc1nc2c(N)nc3ccccc3c2n1CC(C)(C)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.