atroscine

from The Century Dictionary.

• noun The dihydrate of the optically inactive scopolamine, C₁₇H₂₁O₄N + H₂O. It is crystalline and melts at 37° C. The levorotatory form of the base is sometimes called hyoscine.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun organic chemistry An alkaloid found in plants of the genus Scopolia.