Which of the following inhalational agent should not be used in closed circuit?

Sevoflurane, Trilene & Methoxyflurane are avoided in closed circuit. Sevoflurane reacts with sodalime to produce compound A which is nephrotoxic. Trilene reacts with sodalime and produces phosgene gas and dichloroacetylene which can cause ARDS & seizures respectively. Methoxyflurane can react with rubber tubing of closed circuit.