rocuronium

1-[17β-(Acetyloxy)-3α-hydroxy-2β-morpholino-5α-androstan-16β-yl]-1-(2-propenyl)pyrrolidinium

1-[(2beta,3alpha,5alpha,16beta,17beta)-17-(Acetyloxy)-3-hydroxy-2-(4-morpholinyl)androstan-16-yl]-1-(2-propenyl)pyrrolidinium