4,4',8,8'-tetramethoxy-3,3'-dimethyl[2,2']-di-1,1'-naphthol

4-hydroxy-5-methoxy-2-methylnaphthalen-1-yl acetate

1,1'-dihydroxy-8,8'-dimethoxy-3,3'-dimethyl-[2,2'-binaphthalene]-4,4'-diyl diacetate