IUPAC:(1R,4R,5R,7R,8R,11R,13S,17S,18S,19R)-4,5,7,8,17-pentahydroxy-14,18-dimethyl-6-methylidene-3,10-dioxapentacyclo[9.8.0.0^{1,7}.0^{4,19}.0^{13,18}]nonadec-14-ene-9,16-dione
IUPAC:(1R,4R,5R,7R,8R,11R,13S,17S,18S,19R)-4,5,7,8,17-pentahydroxy-14,18-dimethyl-6-methylidene-3,10-dioxapentacyclo[9.8.0.0^{1,7}.0^{4,19}.0^{13,18}]nonadec-14-ene-9,16-dione