Cc1ccccc1-n1c(=O)[nH]c(O)c(C(c2ccncc2)c2c(O)[nH]c(=O)n(-c3ccccc3C)c2=O)c1=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.