16,17-deoxy-laulimalide

4-{6-[6-(tert-butyl-dimethyl-silanyloxy)-11-methoxy-10-(4-methoxy-benzyloxy)-2-methyl-13-(4-methyl-3,6-dihydro-2H-pyran-2-yl)-4-methylene-trideca-7,12-dienyl]-5,6-dihydro-2H-pyran-2-yl}-but-2-ynoic acid

C.15-epi des-epoxy-laulimalide