CCCCN1CC(COCc2ccccc2)Oc2cccc(OCCN3C(=O)[C@H]4[C@H]5C=CC(C5)[C@H]4C3=O)c2S1(=O)=O
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.