Cc1ccc(C(=O)N/C(=C\c2cccs2)C(=O)NCCCn2ccnc2)cc1C
An acid's negative base-10 logarithmic dissociation constant (pKa) follows directly from its underlying thermodynamics; the negative pKa is directly proportional to its standard Gibbs free energy change. What is the negative pKa value of this molecule?