(4R)-4α-Ethyl-1,3,4,4aβ,5,7,12,12aβ-octahydro-2-methylpyrido[3',4':4,5]cyclohept[1,2-b]indol-6(2H)-one

An unclassified species of Hazunta yields this alkaloid. Silicine crystallizes from MeOH as colourless rods and is laevorotatory with a specific rotation of [α]D -18° (c 1.0, CHCl33). The ultraviolet spectrum in EtOH has absorption maxima at 239 and 314 nm.