CC1(C)C(OC(=O)CCC(=O)[O-])CC[C@]2(C)C1CC[C@@]1(C)C2C(=O)C=C2[C@@H]3C[C@@](C)(C(=O)[O-])CC[C@]3(C)CCC21C.[Na+].[Na+]
A lower number of pka indicates that the acid dissociates more entirely in water. What is pka of the molecule?