Cl.Oc1cccc(-c2ccc3c4c2O[C@H]2c5[nH]c6ccccc6c5C[C@@]5(O)[C@@H](C3)N(CC3CC3)CC[C@]425)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.