Cc1cccc(NC(=O)C2C3C=CC4(O3)C2C(=O)N(CCCN2CCCC2)C4C(=O)NC2CCCC(C)C2C)c1
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?