Try searching for...
SCFBio, IIT Delhi
Formula: C18H17NO3 | Mol. Weight: 295.30 g/mol
IUPAC: 7-hydroxy-3-methyl-8-(3-methylbut-2-enyl)-9H-carbazole-1,4-dione
CC1=CC(=O)C2=C(C1=O)C3=C(N2)C(=C(C=C3)O)CC=C(C)C