<prompt> All of the following are intermediate-duration Non depolarizing NMB except-PancuroniumVecuroniumRocuroniumAtracurium  <response>: Non depolarizing muscle relaxants are classified according to their structure and duration of action as: Stucture Clinical duration Long acting 50 min Intermediate 20-50 min Sho 15-20 min Ultra-sho 10-12 min Pancuronium Vecuronium Steroidal Pipecuronium Rocuronium d-Tubocurarine Benzyliso- quinolinium Metacurine Atracurium Doxacurium Cis-atracurium Mivacurium Onium chlorofumarate Gantacurium Phenolic ether Gallamine 