Using C=CCC(CCCC#N)COS(C)(=O)=O, CCOC(=O)CC(=O)OCC to produce C=CCC(CCCC#N)CC(C(=O)OCC)C(=O)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.