Showing structure for (2r,2's,4'ar,5'r,5''s,6's,8'ar)-2'-(acetyloxy)-5''-(furan-3-yl)-4'a,6'-dihydroxy-6'-methyl-2'',8'-dioxo-tetrahydrodispiro[oxirane-2,1'-naphthalene-5',3''-oxolan]-8'a-ylmethyl acetate