Decipinin A InChI=1/C31H36O12/c1-5-6-7-8-9-10-11-12-26(36)41-29-21-17-23(33)30(4,43-20(3)32)28(38)22(21)18-39-31(29)24(14-13-19(2)42-31)40-27(37)16-15-25(34)35/h7-12,17-19,24,29H,5-6,13-16H2,1-4H3,(H,34,35)/b8-7+,10-9+,12-11+/t19?,24-,29+,30?,31+/m0/s butanedioic acid, mono[(3S,3'S,4R)-7-(acetyloxy)-3',4,4',5',6,6',7,8-octahydro-6',7-dimethyl-6,8-dioxo-4-[[(2E,4E,6E)-1-oxo-2,4,6-decatrienyl]oxy]spiro[3H-2-benzopyran-3,2'-[2H]pyran]-3'-yl] ester rel-4-({(3R,3'R,4S)-7-(acetyloxy)-4-[(2E,4E,6E)-deca-2,4,6-trienoyloxy]-6',7-dimethyl-6,8-dioxo-3',4,4',5',6,6',7,8-octahydrospiro[isochromene-3,2'-pyran]-3'-yl}oxy)-4-oxobutanoic acid