CCOC(=O)CCC(NC(=O)C(Cc1ccc([N+](=O)[O-])cc1)NC(=O)OC(C)(C)C)C(=O)NC(CCC(=O)OCC)C(=O)OCC
A lower number of negative pKa indicates that the acid dissociates more entirely in water. What is the negative pKa of this molecule?