lupulin C

(4aS,6R,7S,11S,11aR,2'S,3a'R,6a'S)-dithiocarbonic acid S-methyl ester O-[7-(hexahydrofuro[2,3-b]furan-2'-yl)-3,3,6,7-tetramethyloctahydronaphtho[1,8a-d][1,3]dioxin-11-ylmethyl] ester