(1R,3aS,4E,6Z,8R,8aS,9R,10R,11R,12R,12aS,13R,13aS)-13a-hydroxy-5-(hydroxymethyl)-1,8a-dimethyl-2-oxo-1,3a,8,8a,9,10,11,12a,13,13a-decahydro-2H-spiro[benzo[4,5]cyclodeca[1,2-b]furan-12,2'-oxirane]-8,9, InChI=1/C30H38O15/c1-13-27(37)45-21-10-19(11-31)8-9-20(40-14(2)32)28(7)23(26(30(13,21)38)44-18(6)36)29(12-39-29)25(43-17(5)35)22(41-15(3)33)24(28)42-16(4)34/h8-10,13,20-26,31,38H,11-12H2,1-7H3/b9-8-,19-10+/t13-,20+,21-,22+,23+,24-,25+,26+,28+,29-,30-/m0 Juncenolide C spiro[benzo[4,5]cyclodeca[1,2-b]furan-12(2H),2'-oxiran]-2-one, 8,9,10,11,13-pentakis(acetyloxy)-1,3a,8,8a,9,10,11,12a,13,13a-decahydro-13a-hydroxy-5-(hydroxymethyl)-1,8a-dimethyl-, (1R,3aS,4E,6Z,8R,8a