CC(C)C(=O)N1c2ccccc2N=C2CCCC(O)=C2C1c1ccc(N(C)C)cc1
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?