CC(=O)OC1C(O)C(C)OC(OC(=O)C2CCC3C(C2)OC2(CC(OC(=O)/C=C/c4ccccc4)C(C)CO2)C32CO2)C1OC1OC(C)C(O)C(O)C1O
A lower number of negative pKa indicates that the acid dissociates more entirely in water. What is the negative pKa of this molecule?