CCC(C(=O)NCCC(C)C)N(C(=O)Cn1nnc(-c2ccc(C)cc2)n1)c1cccc(O)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?