Try searching for...
SCFBio, IIT Delhi
Formula: C12H20O7S | Mol. Weight: 308.35 g/mol
IUPAC: 2-[(1R,2R)-3-oxo-2-(5-sulfooxypentyl)cyclopentyl]acetic acid
C1CC(=O)C(C1CC(=O)O)CCCCCOS(=O)(=O)O