rocuronium [ Esmeron,1-(17-(acetoyl)-3-hydroxy-2-(4-morpholinyl)androstan-16-yl)-1-(2-propenyl)pyrrolidinium,Esmerone,ORG 9426,ORG-9426,Organon Teknika brand of rocuronium bromide,Organon brand of rocuronium bromide,Zemuron,pyrrolidinium, 1-((2beta,3alpha,5alpha,16beta,17beta)-17-(acetyloxy)-3-hydroxy-2-(4-morpholinyl)androstan-16-yl)-1-(2-propenyl)-, bromide,rocuronium bromide ] structure given in first source