Using CC(C)(C)OC(=O)N[C@H]1Cc2[nH]c3ccc(C=O)cc3c2C1, CON to produce CON=Cc1ccc2[nH]c3c(c2c1)C[C@@H](NC(=O)C(C)(C)C)C3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.