In People v. O'Neill (285 AD2d 669) the purchasers merely stated their conclusion that the pills purchased were Vicodin or hydrocodone, with no explanation for the basis of their conclusion. Nor did they testify that the defendant, O'Neill, expressly represented that the pills were Vicodin or hydrocodone. In those circumstances, the purchasers' identifications of the substance were deemed conclusory and insufficient to support the drug trafficking charges