Using COCON1C(=O)C(c2c(C)cc(C)cc2C)=C(O)C12CCN(OC)CC2 to produce CON1CCC2(CC1)C(O)=C(c1c(C)cc(C)cc1C)C(=O)N2O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.