Using CC(C)COC(C)ONC(=O)c1cnc(N2CC3C(CNCc4ccc5ccccc5c4)C3C2)nc1 to produce O=C(NO)c1cnc(N2CC3C(CNCc4ccc5ccccc5c4)C3C2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.