Using Cc1cc(O)c2c(ccc3nc(C)[nH]c32)n1, O=P(Cl)(Cl)Cl to produce Cc1cc(Cl)c2c(ccc3nc(C)[nH]c32)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.