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):
Laertes (Hamlet) Laertes confesses the truth and reveals that it was Claudius's plot, resulting in the death of Claudius by Hamlet's hands. Laertes asks Hamlet for forgiveness, absolving him of his and his father's deaths if Hamlet absolves him of his own. Hamlet does, dying shortly after Laertes does. Other characters' views of Laertes vary widely. Polonius feels a need to send a servant to France to spy on his son's behaviour. Ophelia tells him not to be a hypocrite (in telling her to behave herself with Hamlet, but then being immoral himself in France). Hamlet is at first puzzled by Laertes's