(2R,2′R)-5-Hydroxy-3-oxo-3H-spiro[1-benzofuran-2,1′-cyclohept[5]ene]-2′,6′-dicarboxylic acid

(2R,2′R)-5-Hydroxy-3-oxo-3H-spiro[1-benzofuran-2,1′-cyclohept[5]ene]-2′,6′-dicarboxylic acid

Spiro[benzofuran-2(3H),1′-cyclohept[5]ene]-2′,6′-dicarboxylic acid, 5-hydroxy-3-oxo-, (2R,2′R)-

Spiroapplanatumine B