Try searching for...
SCFBio, IIT Delhi
Formula: C20H18O5 | Mol. Weight: 338.40 g/mol
IUPAC: (2S)-7-hydroxy-1-methyl-9,10-dioxo-2-(3-oxobutyl)-2H-anthracene-1-carbaldehyde
CC(=O)CCC1C=CC2=C(C1(C)C=O)C(=O)C3=C(C2=O)C=CC(=C3)O