CC(=O)O[C@@H]1c2oc(cc2C)[C@H]2O[C@]2(C)C[C@H]2C=C(C(=O)O2)[C@H](OC(C)=O)CC1[C@@]1(C)CO1
A lower number of negative pKa indicates that the acid dissociates more entirely in water. What is the negative pKa of this molecule?