Cc1ccc(S(=O)(=O)O[C@@H]2[C@H]([C@@H]3COC(C)(C)O3)O[C@H]3OC(C)(C)O[C@@H]32)cc1
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.