3,8,11,12,17-Pentahydroxy-tricyclo[12.3.1.1^(2,6)]nonadeca-1(17),2,4,6(19),14(18),15-hexaen-9-one Carpinontriol A InChI=1/C19H20O6/c20-14-3-1-10-5-12(14)13-6-11(2-4-15(13)21)8-17(23)19(25)9-18(24)16(22)7-10/h1-6,16-18,20-24H,7-9H2/t16-,17+,18+/m0/s rel-(8R,11R,12S)-3,8,11,12,17-pentahydroxytricyclo[12.3.1.1~2,6~]nonadeca-1(18),2(19),3,5,14,16-hexaen-9-one tricyclo[12.3.1.1~2,6~]nonadeca-1(18),2,4,6(19),14,16-hexaen-9-one, 3,8,11,12,17-pentahydroxy-, (8R,11R,12S)-