CCC1(CC)C(=O)C2=C3C1[C@H](C(=O)OC)CC(C(=O)OC)C[C@H]3[C@H]1C(=O)N(c3ccccc3)C(=O)[C@H]1[C@H]2C
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.