C[C@H]1CN([C@H](C)CO)C(=O)c2cccc(NS(=O)(=O)c3ccc(F)cc3)c2O[C@@H]1CN(C)Cc1ccc(-c2ccccc2)cc1
A lower number of negative pKa indicates that the acid dissociates more entirely in water. What is the negative pKa of this molecule?