CC(C)=CCC12Oc3cc(O)ccc3C1(O)Oc1cc(O)c([C@H]3C=C(C)CC(c4ccc(O)cc4O)[C@H]3C(=O)c3ccc(O)cc3O)c(O)c1C2=O
A lower number of negative pKa indicates that the acid dissociates more entirely in water. What is the negative pKa of this molecule?