CCCCCCCCCCCCCCCCCCNc1nc(=O)n(C2CC(OP(=O)(O)OCC3OC(n4cc(F)c(=O)[nH]c4=O)CC3O)C(CO)O2)cc1F
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.