Tris(1,3-dichloro-2-propyl)phosphate
Tris(1,3-dichloroisopropyl)phosphate (TDCPP) is a chlorinated organophosphate which used as a flame retardant, particularly in polyurethane foams. It is structurally related to several other flame retardants, such as tris(2-chloroethyl) phosphate (TCEP) and tris(chloropropyl) phosphate (TCPP), which are sometimes sometimes collectively referred to as "chlorinated tris".
Source: Wikipedia — Tris(1,3-dichloro-2-propyl)phosphate (CC BY-SA 4.0)