C/C(CCN1CCc2nc(-c3ccccc3)c(-c3ccccc3)cc2C1)=N\OC[C@@H](O)[C@@H]1O[C@@H]2OC(C)(C)O[C@@H]2[C@H]1O
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.