Using C[S+](C)(C)=O, CCOC(=O)C=C(C(=O)OCC)c1ccc2nc(C)ccc2c1 to produce CCOC(=O)C1CC1(C(=O)OCC)c1ccc2nc(C)ccc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.