Cc1ccc(C)c(-n2c3nc(=O)[nH]c(=O)c-3cc3cc([N+](=O)[O-])ccc32)c1
The negative base-10 logarithmic of dissociation constant (pka) for an acid is a direct consequence of the underlying thermodynamics of the dissociation reaction; the pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the pka value of this molecule?