CC(C)Cc1cccc(C(C)C)c1NC(=O)CCC(=O)N/N=C1C(=N/NC(=O)CCC(=O)Nc2c(C(C)C)cccc2C(C)C)\C(c2ccc3c(c2)OCO3)Oc2ccccc2\1
The negative base-10 logarithmic of dissociation constant (pKa) for an acid is a direct consequence of the underlying thermodynamics of the dissociation reaction; the negative pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the negative pKa value of this molecule?