Cc1nn(C)c(C)c1-c1cccc2c(CCCOc3cccc4ccccc34)c(C(=O)O)[nH]c12
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?