Cc1cc2c(cc1C)[n+]([O-])c(C(=O)C/C(=N/NC(=O)CC#N)C(=O)Nc1ccccc1C(F)(F)F)c(C)[n+]2[O-]
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.