C#CCOCCOCCOCCNc1nc(N2CCN(C(=O)Cn3cc(CCCN=C(N)N)nn3)CC2)nc(N2CCN(C(=O)[C@H](C)n3cc(CCCN=C(N)N)nn3)CC2)n1.Cl
PSA is a commonly used medicinal chemistry metric for the optimization of a drug's ability to permeate cells. Please predict psa of this molecule.