CC[C@]12C=CCN3CC[C@@]4(c5cc(N=O)c(OC)cc5N(C)[C@H]4[C@@](O)(C(=O)NC(Cc4c[nH]c5ccccc45)C(=O)OC)[C@@H]1O)[C@@H]32
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.