Cc1ccc(NC(=O)/C(=C\c2ccc3c(c2)OCO3)NC(=O)c2ccco2)cc1
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?