2,3'-bi-1H-indole, 2,3-dihydro- 2,3-dihydro-1H,1'H-2,3'-biindole 6637-10-1 InChI=1/C16H14N2/c1-3-7-14-11(5-1)9-16(18-14)13-10-17-15-8-4-2-6-12(13)15/h1-8,10,16-18H,9H