118230-89-0 4H-Indol-4-one, 3-(2-aminoethyl)-7-(3-(2-aminoethyl)-1,4-dihydro-5-hydroxy-4-oxo-7H-indol-7-ylidene)-1,7-dihydro-5-hydroxy- 7,7'-Bis-(5-hydroxytryptamine-4-one) 7,7'-Hto