CC(C)CC(NC(=O)C(Cc1ccccc1)NC(=O)C(Cc1c[nH]c2ccccc12)NC(=O)CNC(=O)C(N)Cc1ccc(O)cc1)C(=O)O
A lower number of negative pKa indicates that the acid dissociates more entirely in water. What is the negative pKa of this molecule?