CCCC/N=C/[C@]12CCC(O)CC1(O)CCC1[C@@H]2CC[C@]2(C)[C@H](C3C=CC(=O)O3)CCC12O
The negative base-10 logarithmic of dissociation constant (pka) for an acid is a direct consequence of the underlying thermodynamics of the dissociation reaction; the pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the pka value of this molecule?