What is the Ajmaline

What is a Ajmaline? For many people this is a strange object, and here's the introduction to it:

Ajmaline, an alias of almain and silofwood, is a form of alkaloid extracted from the root of the rhizoma. The molecular formula is C20H26N2O2 with a molecular weight of 326.43300. O righteous marin for anti-arrhythmic drugs, mainly used in clinical treatment of ventricular arrhythmia and ventricular sex arrhythmia, pre-excitation syndrome syndrome associated with the rate of premature beat, pre-excitation syndrome syndrome with room premature beat and pre-excitation syndrome syndrome associated with ventricular premature beat.