Try searching for...
SCFBio, IIT Delhi
Formula: C17H12O7 | Mol. Weight: 328.27 g/mol
IUPAC: 1,8,10-trihydroxy-9-methoxy-5H-isochromeno[4,3-b]chromen-7-one
COC1=C(C2=C(C=C1O)OC3=C(C2=O)OCC4=C3C(=CC=C4)O)O