Using CCN1C(=O)C(C)(C)C(=O)N(C)c2cc(C=O)ccc21, O=P([O-])(O)O to produce CCN1C(=O)C(C)(C)C(=O)N(C)c2cc(C(=O)O)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.