Cc1oc(-c2cccc(Cl)c2)nc1CN1CCCC(C(=O)NC(C)c2ccc3c(c2)OCCO3)C1
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?