Cc1ccc(-c2c(C#N)c(-c3ccc([N+](=O)[O-])cc3)c(C#N)c(=O)n2NS(=O)(=O)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.