Cc1cccc(CNC(=O)c2ccc(-c3nc(CS(=O)(=O)c4ccccc4)c(C)o3)cc2)c1
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?