17-n-Butylsparteine dihydrogen tartrate 7,14-Methano-2H,6H-dipyrido(1,2-a:1',2'-e)(1,5)diazocine, dodecahydro-6-butyl-, (R-(R*,R*))-2,3-dihydroxybutanedioate (1:1) 75714-73-7