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 comedy sketch, lacking the portent and linguistic complexity of Tom Stoppard's "Rosencrantz and Guildenstern Are Dead". "Fortinbras" operates on a far less ambitious plane, but it is a ripping yarn and offers Keith Reddin a role in which he can commit comic mayhem". Caridad Svich's "12 Ophelias (a play with broken songs)" includes elements of the story of "Hamlet" but focuses on Ophelia. In Svich's play, Ophelia is resurrected and rises from a pool of water, after her death in "Hamlet". The play is a series of scenes and songs, and was first staged at public swimming pool in Brooklyn.