大环哌喃

(3S,4R,5S,8R,12S,14S,15R,16S,18R,19R,26As)-5,19-Dihydroxy-3-{(1E)-1-[(1R,3R,4R)-4-Hydroxy-3-Methoxycyclohexyl]Prop-1-En-2-Yl}-14,16-Dimethoxy-4,10,12,18-Tetramethyl-8-(Prop-2-En-1-Yl)-5,6,8,11,12,13,14,15,16,17,18,19,24,25,26,26A-Hexadecahydro-3H-15,19-Epoxypyrido[2,1-C][1,4]Oxazacyclotricosine-1,7,20,21(4H,23H)-Tetrone