Cn1c(=O)c2c(nc(N/N=C\c3ccccc3C(=O)O)n2C)n(C)c1=O
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?