C#CC(O)/C=C/C(O)CCCC(O)CC#CC(O)C#CCCCCC(O)/C=C/CCCC(O)/C=C/CCCCCCCCCCCCCC(O)C(O)C#CC(=O)O
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?