CN(C)c1ccc(C2C(Cl)C(=O)N2NC(=O)c2c(Cl)c(Cl)c(Cl)c(Cl)c2-c2nc3ccccc3[nH]2)cc1
A lower number of negative pKa indicates that the acid dissociates more entirely in water. What is the negative pKa of this molecule?