CC(=O)Oc1ccc(C(=O)[C@H]2[C@H]3C(=O)N(c4ccc5ccccc5c4)C(=O)[C@H]3[C@@H]3C=CC=NN32)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.