O=C(O)c1[nH]cc(-c2c[nH]c3cc(Cl)c(Cl)cc23)c1-c1c[nH]c2ccc(Cl)cc12	3-(5-chloro-1H-indol-3-yl)-4-(5,6-dichloro-1H-indol-3-yl)-1H-pyrrole-2-carboxylic acid