CC(C)C[C@@H](CN1CCC[C@@H]1CN1C(=O)C(=O)NC[C@@H]1Cc1ccccc1)N1C[C@H](Cc2ccc(O)cc2)N(CC2CCCCCC2)C(=O)C1=O
A lower number of negative pKa indicates that the acid dissociates more entirely in water. What is the negative pKa of this molecule?