Cc1cc(OC(C)C(=O)NCc2ccncc2)c2c3c(c(=O)oc2c1)CCC3
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?