FC(F)(F)c1cc(ccc1N(O)=O)N=Cc2c(O)c(O)c(C(C)C)c3cc(C)c(c(O)c23)c4c(C)cc5c(C(C)C)c(O)c(O)c(C=Nc6ccc(N(O)=O)c(c6)C(F)(F)F)c5c4O