Oc1ccc(Cl)cc1C1=NC(NCN2CCN(CNC3=NC(c4ccccc4)CC(c4cc(Cl)ccc4O)=N3)CC2)=NC(c2ccccc2)C1
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.