CC(C)C1=CC23CCC4C(C)(C(=O)O)CCCC4(C)C2CC1C1C(=O)N(c2ccc(C(=O)[O-])cc2)C(=O)C13.[Na+]
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.