Cc1ccc(OCC(=O)Nc2ccc(C)c(S(=O)(=O)N3CCCCC3)c2)c([N+](=O)[O-])n1
An acid's negative base-10 logarithmic dissociation constant (pka) follows directly from its underlying thermodynamics; pKa is directly proportional to its standard Gibbs free energy change. What is the pka value of this molecule?