1-Azaspiro(5.5)undecan-8-ol, 7-butyl-2-pentyl-, (2R,6R,7S,8S)- 1-Azaspiro(5.5)undecan-8-ol, 7-butyl-2-pentyl-, (6R-(6alpha(R*),7beta,8alpha))- 40709-29-3 H(12)-Htx Perhydrohistrionicotoxin