CC(=O)O[C@H]1/C(=C/c2ccncc2)C[C@H]2[C@@H]3CC=C4C[C@@H](N5CCCC5)CC[C@]4(C)[C@H]3CC[C@@]21C
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.