C#CCOCCOCCOCCNc1nc(N2CCN(C(=O)[C@H](C(C)C)n3cc(CCO)nn3)CC2)nc(N2CCN(C(=O)[C@H]([C@@H](C)CC)n3cc(CCC(=O)O)nn3)CC2)n1
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?