C[C@@H]1O[C@H](O[C@H]2[C@@H](O)C[C@@H](O[C@H]3[C@@H](O)C[C@@H](O[C@H]4CC[C@]5(C)[C@@H](CC[C@@H]6[C@H]5C[C@@H](O)[C@]5(C)[C@@H](C7=CC(=O)OC7)CC[C@]65O)C4)O[C@H]3C)O[C@H]2C)C[C@H](O)[C@@H]1O
A lower number of negative pKa indicates that the acid dissociates more entirely in water. What is the negative pKa of this molecule?