What is the test for determining whether a defendant knew of the nature or character of a controlled substance when he allegedly acted in this case?

knew of the substance's nature or character as a controlled substance when he allegedly acted in this case. Do not consider this evidence for any other purpose except for the limited purpose of determining whether the defendant possessed the required specific intent and/or requisite knowledge. Do not conclude from this evidence that the defendant has a bad character or is disposed to commit a crime." We presume the jury followed this limiting instruction. (People v. Yeoman (2003) 31 Cal.4th 93, 139.)