CC(=O)Nc1ccc(S(=O)(=O)NC2(C(F)(F)F)C(=O)Nc3c2c(=O)[nH]c(=O)n3-c2ccc(C)cc2)cc1
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.