CC(=O)[C@@]1(O)CC[C@H]2[C@H]3C[C@@H](C)C4=CC(=O)C=C[C@]4(C)[C@@]3(F)[C@@H](O)C[C@]21C
A lower number of negative pKa indicates that the acid dissociates more entirely in water. What is the negative pKa of this molecule?