Robuta

https://webbook.nist.gov/cgi/inchi/InChI%3D1S/C26H54OSi/c1-6-10-14-18-22-26(5)27-28(23-19-15-11-7-2%2C24-20-16-12-8-3)25-21-17-13-9-4/h18%2C22%2C26H%2C6-17%2C19-21%2C23-25H2%2C1-5H3/b22-18%2B 2-Trihexylsilyloxyoct-3-ene ene