(7-((2-Methyl-2-butenoyl)oxy)hexahydro-1H-pyrrolizin-1-yl)methyl 2-(hydroxymethyl)-2-butenoate 136173-26-7 2-Butenoic acid, 2-(2-hydroxymethyl)-, {[hexahydro-7-[(2-methyl-1-oxo-2-butenyl)oxy]-1H-pyrrolizin-1-yl]me} thyl ester AIDS-145123 AIDS145123 NSC669379 Neosarrine