(3
S,4
R,5
S,8
R,9
E,12
S,14
S,15
R,16
S,18
R,19
R,26a
S)-8-etyl-5,6,8,11,12,13,14,15,16,17,18,19,24,25,26,26a-hexadekahydro-5,19-dihydroxi-3-[(
E)-2-[(1
R,3
R,4
S)-4-kloro-3-metoxicyklohexyl]-1-metyl-vinyl]-14,16-dimetoxi-4,10,12,18-tetrametyl-15,19-epoxi-3
H-pyrido[2,1-
c][1,4]oxaazacyklotrikosin-1,7,20,21(4
H,23
H)-tetron