1-anthracenecarboxaldehyde, 1,2,9,10-tetrahydro-7-hydroxy-1-methyl-9,10-dioxo-2-(3-oxobutyl)-, (1S,2S)- 7-Hydroxy-1-methyl-9,10-dioxo-2-(3-oxo-butyl)-1,2,9,10-tetrahydro-anthracene-1-carbaldehyde InChI=1/C20H18O5/c1-11(22)3-4-12-5-7-15-17(20(12,2)10-21)19(25)16-9-13(23)6-8-14(16)18(15)24/h5-10,12,23H,3-4H2,1-2H3/t12-,20-/m0/s Sterekunthal A rel-(1R,2R)-7-hydroxy-1-methyl-9,10-dioxo-2-(3-oxobutyl)-1,2,9,10-tetrahydroanthracene-1-carbaldehyde