Using COc1cc2c(=O)c(C#N)c[nH]c2cc1NC(C)=O, O=P(Cl)(Cl)Cl to produce COc1cc2c(Cl)c(C#N)cnc2cc1NC(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.