Using O=P([O-])(O)O, CC(NC(=O)OC(C)(C)C)c1ncc(C=O)s1 to produce CC(NC(=O)OC(C)(C)C)c1ncc(C(=O)O)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.