COc1ccc(C(=O)CC2=Nc3nnc(CCCCCCCc4nnc5n4C(=O)C(CC(=O)c4ccc(OC)cc4)=N5)n3C2=O)cc1
A lower number of negative pKa indicates that the acid dissociates more entirely in water. What is the negative pKa of this molecule?