1,2-Dithiolan-4-ol, 3,3'-(1-methyl-2,5-pyrrolidinediyl)bis-, (2R-(2alpha(3S*,4S*),5beta(3S*,4S*)))- 11010-54-1 14022-19-6 Bis-1,2-dithioalanylpyrrolidine Gerrardine