Using COC(=O)C(C)c1ccc(CC(C)C)cc1, O=P([O-])([O-])[O-] to produce COC(=O)C(C)c1ccc(C(O)C(C)C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.