Simplify the following text for a Grade 14 native English-speaking person.
Original: Atropine is a tropane alkaloid extracted from deadly nightshade ( Atropa belladonna ) , jimsonweed ( Datura stramonium ) , mandrake ( Mandragora officinarum ) and other plants of the family Solanaceae .
Simplified: Atropine is a tropane alkaloid , that can be extracted from the Deadly nightshade ( Atropa belladonna ) , mandrake ( Mandragora officinarum ) and certain other plants .