10,20-Dimethyl-5,15-bis-(2-methyl-cyclopropyl)-9,19-bis-(3,4,5-trimethoxy-tetrahydro-pyran-2-yloxy)-4,14,21,22-tetraoxa-tricyclo[15.3.1.1^7,11]docosane-3,13-dione Clavosolide A InChI=1/C44H72O16/c1-21-11-27(21)33-15-25-13-29(59-43-41(51-9)39(49-7)35(47-5)19-53-43)23(3)32(55-25)18-38(46)58-34(28-12-22(28)2)16-26-14-30(24(4)31(56-26)17-37(45)57-33)60-44-42(52-10)40(50-8)36(48-6)20-54-44/h21-36,39-44H,11-20H2,1-10H3/t21-,22-,23+, rel-(1R,5R,7R,9R,10R,11R,15R,17R,19R,20R)-10,20-dimethyl-5,15-bis[(1R,2R)-2-methylcyclopropyl]-9,19-bis{[(2R,3S,4R,5S)-3,4,5-trimethoxytetrahydro-2H-pyran-2-yl]oxy}-4,14,21,22-tetraoxatricyclo[15.3.1.