CCCCNC(=O)C(C)N(CCN(C)C)C(=O)CCCN1C(=O)NC(c2ccc(Cl)cc2)C(C(=O)OCc2ccccc2)=C1C
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.