COc1cc2c(cc1OCCCC(=O)Nc1cc(C(=O)Nc3cc(C(=O)NCCCN(C)C)n(C)n3)n(C)n1)N=CC1CCCN1C2=O
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 pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the pka value of this molecule?