1,4-naphthalenedione, 2-(1,1-dimethyl-2-oxopropyl)-3-hydroxy- 2-(1,1-dimethyl-2-oxopropyl)-3-hydroxynaphthoquinone InChI=1/C15H14O4/c1-8(16)15(2,3)11-12(17)9-6-4-5-7-10(9)13(18)14(11)19/h4-7,19H,1-3H