3,5a-Methano-5aH-cycloheptacyclodecen-8(1H)-one, dodecahydro-4,7,10,12,14-pentahydroxy-4,9,9-trimethyl-13-methylene-, (3R-(3R*,4R*,5aS*,7R*,10S*,12S*,13aS*,14R*))- 52611-78-6 Grayanol B