Acetic acid (E)-(S)-1-[(2S,5S,6R)-6-((S)-2-methoxy-3-{(2R,4R,6S)-6-[2-(4-methoxy-benzyloxy)-ethyl]-4-triisopropylsilanyloxy-tetrahydro-pyran-2-yl}-propyl)-5-methyl-tetrahydro-pyran-2-ylmethyl]-5-methyl-hex-2-enyl ester

5-[2-(3-Methoxycarbonylamino-prop-1-ynyl)-oxazol-4-yl]-pent-2-ynoic acid (1R,3S,5R,7R,9R,13R,15S,18S)-3-methoxy-18-methyl-13-((E)-4-methyl-pent-1-enyl)-11-oxo-12,19,20-trioxa-tricyclo[13.3.1.15,9]icos-7-yl ester