CN(C)c1ccc(/C=C2\C[C@H]3[C@@H]4CCc5cc(OCCN6CCCC6)ccc5[C@H]4CC[C@]3(C)C2=O)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.