Cc1ccc(S(=O)(=O)N(C)C[C@H]2Oc3cc(Br)ccc3S(=O)(=O)N([C@H](C)CO)C[C@H]2C)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.