CCCCCCN(C(=O)CCCN1C(=O)NC(c2ccc([N+](=O)[O-])cc2)C(C(=O)OCc2ccccc2)=C1C)C(C)C(=O)NCCCC
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.