COc1ccc(C[C@H]2CN3C(=NC[C@@H]3Cc3ccc(O)cc3)N2C[C@H](C)NC(=O)c2ccc(C)c(Br)c2)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.