CCCNC(=O)c1ccc(N2CCC3(CC2)CC(c2cccc(Br)c2)=NO3)c(NC(=O)c2ccco2)c1
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?