Cc1cccc(NC(=O)Cn2c(=O)n(CCCS(=O)(=O)C3CCCCC3)c(=O)c3ccccc32)c1
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?