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 (1996 film) amendments from other sources. According to a note appended to the published screenplay: Despite using a full text, Branagh's film is also very visual; it makes frequent use of flashbacks to depict scenes that are either only described but not performed in Shakespeare's text, such as Hamlet's childhood friendship with Yorick, or scenes only implied by the play's text, such as Hamlet's sexual relationship with Kate Winslet's Ophelia. The film also uses very long single takes for numerous scenes. In a radical departure from previous "Hamlet" films, Branagh set the internal scenes in a vibrantly colourful setting, featuring a throne