Cc1ccc(N2C(=O)/C(=C/c3ccc(CN(CCC#N)S(C)(=O)=O)o3)C(=O)NC2=S)cc1
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?