NC(=S)N/N=C(\C(=O)Nc1ccc(Cl)c(Cl)c1)C1=NN(c2ccccc2)C(c2cccc([N+](=O)[O-])c2)CC1=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.