teraspiridole A

(2S,2′S,3aS,3bR,4S,5aR,9a′S,10aR,10bR,12aS)-2′,3b,6,6,10a,12a-Hexamethyl-3′,8-dioxo-1′,2′,3′,3a,3b,4,5,5a,6,8,9a′,10a,10b,11,12,12a-hexadecahydro-3H-spiro[furo[3′,2′:5,6]naphtho[2,1-c]oxepine-2,9′-imi dazo[1,2-a]indol]-4-yl acetate

Spiro[furo[3′,2′:5,6]naphth[2,1-c]oxepin-2(3H),9′-[9H]imidazo[1,2-a]indole]-3′,8(2′H,5H)-dione, 4-(acetyloxy)-1′,3a,3b,4,5a,6,9′a,10a,10b,11,12,12a-dodecahydro-2′,3b,6,6,10a,12a-hexamethyl-, (2S,2′S,3 aS,3bR,4S,5aR,9a′S,10aR,10bR,12aS)-

teraspiridole A