Cc1cccn2c(=O)c3cc(C(=O)NCc4ccco4)c(=N)n(CCOCCO)c3nc12
An acid's negative base-10 logarithmic dissociation constant (pka) follows directly from its underlying thermodynamics; pKa is directly proportional to its standard Gibbs free energy change. What is the pka value of this molecule?