[2,2'-Bi-4H-1-benzopyran]-4,4'-dione,2,2',3,3'-tetrahydro-5,5'-dihydroxy-3-(4-hydroxyphenyl)-7,7'-dimethoxy-3'-(4-methoxyphenyl)-,[2a(2'R*,3'S*),3b]-; Hexaspermone C
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