4,7-Dime-5,6-dht 4,7-Dimethyl-5,6-dihydroxytryptamine 4H-Imidazol-4-one, 2-amino-1,5-dihydro-1-methyl-, compd. with 3-(2-aminoethyl)-4,7-dimethyl-1H-indole-5,6-diol sulfate (salt) (1:1:1) 97073-72-8