10-(2-(3-Ethyl-5,6-dihydro-1(2H)-pyridinyl)ethyl)- 6-(3-(2-(3-ethyl-5,6-dihydro-1(2H)-pyridinyl)ethyl)-1H-indol-2-yl)-6,7,8,9-tetrahydropyrido(1,2-a)in dole-6,9-dicarboxylic acid, dimethyl ester 34304-16-0 Secamine