Nc1ccc(C(=O)N/C(=C\c2cccc([N+](=O)[O-])c2)c2nc3c4c(ccc3[nH]2)C(=O)c2ccccc2C4=O)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.