Cc1cccc(NC(=O)Cn2c(=O)n(Cc3ccc4c(c3)OCO4)c(=O)c3oc4ccccc4c32)c1C
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?