Robuta

https://webbook.nist.gov/cgi/inchi/InChI%3D1S/C6H7NO3S/c8-7-11(9%2C10)6-4-2-1-3-5-6/h1-5%2C8H%2C(H%2C7%2C9%2C10) N-Hydroxybenzenesulfonamide n