COc1ccc2c(c1)OC[C@H]1[C@H]2N2C(=O)CN(Cc3ccc(Cl)cc3)C(=O)[C@@]2(C)[C@H]1c1ccccc1
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.