(3S,6E,8R,9S,12E,14R,15S)-16-benzyl-14-hydroxy-8-(2-methoxyethoxy)methoxy-3,9,15-trimethyl-16-aza-4,10-dioxa-6,12-cyclohexadecadiene-1,5,11-trione

(1S,2R)-2-tert-butyldiphenylsilyloxy-1-methyl-3-butenyl (2E,4R,5S)-5-tert-butyldimethylsilyloxy-4-(2-methoxyethoxy)methoxy-2-hexenoate

(1S,2R,3E)-4-[(1S,2R)-2-tert-butyldiphenylsilyloxy-1-methyl-3-butenyloxy]-2-(methoxyethoxy)methoxy-1-methyl-3-butenyl (S)-3-tert-butoxycarbonylamino-butenoate