Using COS(=O)(=O)OC, Cc1cc(O)c(C(=O)C=Cc2cccc(C=CC#N)c2)c(=O)o1 to produce COc1cc(C)oc(=O)c1C(=O)C=Cc1cccc(C=CC#N)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.