Using CO[C@@H](CCc1nc(-c2ccccc2)oc1C)c1ccc(C=C2SC(=O)NC2=O)cc1 to produce COC(CCc1nc(-c2ccccc2)oc1C)c1ccc(C[C@@H]2SC(=O)NC2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.