Cc1cc(O)c2cnncc3c(O)cc(C)c4c(=O)oc5c(CO)c(O)c(C(=O)O)c(cnncc6c(C(=O)O)c(O)c(CO)c7oc(=O)c1c2oc67)c5oc34
An acid's negative base-10 logarithmic dissociation constant (pKa) follows directly from its underlying thermodynamics; the negative pKa is directly proportional to its standard Gibbs free energy change. What is the negative pKa value of this molecule?