Diacylglycerol acyltransferase 1 (DGAT-1) inhibitor (IC50 values are 7 and 24 nM at human and mouse DGAT-1 respectively) that is devoid of activity at DGAT-2, ACAT1 or ACAT2. Induces significant weight loss without altering food intake, and decreases liver and plasma triglyceride levels in vivo. Orally active.