N-(2-(3-(6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline-2-carbonyl)piperidinio)ethyl)-4-fluorobenzamide
n-(2-(3-(6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline-2-carbonyl)piperidinio)ethyl)-4-fluorobenzamide