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