(Guanidino 2 ethyl) 6 benzodioxanne 1,4 hemioxalate [French] 1-(2-(1,4-Benzodioxan-6-yl)ethyl)guanidine oxalate (2:1) 17413-09-1 GUANIDINE, 1-(2-(1,4-BENZODIOXAN-6-YL)ETHYL)-, OXALATE (2:1)