Bis(trimethylsilyl)peroxide
Bis(trimethylsilyl)peroxide (sometimes abbreviated as BTSP) is an organosilicon compound with the formula ((CH3)3SiO)2. It is a colorless liquid that is soluble in organic solvents so long as they lack acidic groups.
Source: Wikipedia — Bis(trimethylsilyl)peroxide (CC BY-SA 4.0)