Ruta graveolens the isolation of the furanocoumarin chalepensin. The essential oil of "R. graveolens" contains two main constituents, undecan-2-one (46.8%) and nonan-2-one (18.8%). The bitter taste of its leaves led to rue being associated with the (etymologically unrelated) verb "rue" "to regret". Rue is well known for its symbolic meaning of regret and it has sometimes been called "herb-of-grace" in literary works. It is one of the flowers distributed by the mad Ophelia in William Shakespeare's "Hamlet" (IV.5): It was planted by the gardener in "Richard II" to mark the spot where the Queen wept upon hearing news of Richard's capture (III.4.104–105):
Hamlet the objective correlative becomes apparent. Hamlet is suicidal in the first soliloquy not because his mother quickly remarries but because of her adulterous affair with the despised Claudius which makes Hamlet his son. Finally, the ghost's confirmation of an alternative fatherhood for Hamlet is a fabrication that gives the prince a motive for revenge. In the 20th century, feminist critics opened up new approaches to Gertrude and Ophelia. New Historicist and cultural materialist critics examined the play in its historical context, attempting to piece together its original cultural environment. They focused on the gender system of early modern England, pointing