4-tert-butyldimethylsilyloxy-15,24-di(methoxymethoxy)-34-(p-methoxybenzyloxymethyloxy)asimicin

(cis,4R,5R,12R,13R)-5-tert-butyldiphenylsilyloxytricos-12,13-isopropylidenedioxy-8,22-dien-1,4-olide

(4R,5R,8R,9S,12R,13R)-12,13-dihydroxy-9-mesyloxy-5,8-oxidotricos-22-en-1,4-olide