IUPAC Name
(2R,4'S,5S,6R,10'E,12'S,13'S,14'E,16'E,20'R,21'R,24'R)-6-[(2S)-butan-2-yl]-21',24'-dihydroxy-12'- {[(2R,4S,5S,6S)-5-{[(2S,4S,5S,6S)-5-hydroxy-4-methoxy-6-methyloxan-2-yl]oxy}-4-methoxy-6-methyloxan-2-yl]oxy}-5,11',13',22'-tetramethyl-3',7',19'-trioxaspiro[oxane-2,6'- teane]-1'(23'),10',14',16'-tetraen-2'-one