CSC[C@H](NC(=O)Cc1c(C)c2cc3c(C)c(C)oc3cc2oc1=O)C(=O)N[C@@H](Cc1ccccc1)C(=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.