CCN1CCN(Cc2ccc(NC(=O)c3ccc(C)c(NC(=O)c4cc(-c5ccc(Br)cc5)[nH]n4)c3)cc2C(F)(F)F)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.