2-hydroxy-5-{2-phenyl-3H,4H,5H-benzo[e]indol-3-yl}benzoic acid

5-(4,5-dihydro-2-phenyl-3h-benz(e)indol-3-yl)-2-hydroxybenzoicacid

5-(4,5-dihydro-2-phenyl-3h-benz(e)indol-3-yl)-2-hydroxy-benzoicaci

3-(3-carboxy-4-hydroxyphenyl)-2-phenyl-4,5-dihydro-3h-benz(e)indole