Cc1ccc(S(=O)(=O)N2C[C@H]3N(C(=O)OC(C)C)N(C(=O)OC(C)C)C[C@H](OC(=O)NCC4CCCCC4)[C@@]3(O)C2)cc1
A lower number of negative pKa indicates that the acid dissociates more entirely in water. What is the negative pKa of this molecule?