Robuta

https://webbook.nist.gov/cgi/inchi/InChI%3D1S/C19H38O4Si2/c1-15(20)14-16(22-24(8%2C9)18(2%2C3)4)12-13-17(21)23-25(10%2C11)19(5%2C6)7/h14H%2C12-13H2%2C1-11H3/b16-14- Succinylacetone diTBDMS