Try searching for...
SCFBio, IIT Delhi
Formula: C16H9NO6 | Mol. Weight: 311.24 g/mol
IUPAC: 6-nitronaphtho[2,1-g][1,3]benzodioxole-5-carboxylic acid
C1OC2=C(O1)C3=C(C(=C2)C(=O)O)C(=CC4=CC=CC=C43)[N+](=O)[O-]