CCc1ccccc1N(C(=O)c1snc(C(N)=O)c1N)C(C(=O)NCC1CCCO1)c1ccc(N(C)C)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?