octadecamethyloctasiloxane 1,1,1,3,3,5,5,7,7,9,9,11,11,13,13,15,15,15-Octadecamethylpentadecaneoctasiloxane Octadecamethylpentadecaneoctasiloxane [[dimethyl(trimethylsilyloxy)silyl]oxy-dimethyl-silyl]oxy-[[[dimethyl(trimethylsilyloxy)silyl]oxy-dimethyl-silyl]oxy-dimethyl-silyl]oxy-dimethyl-silane [[dimethyl(trimethylsilyloxy)silyl]oxy-dimethylsilyl]oxy-[[[dimethyl(trimethylsilyloxy)silyl]oxy-dimethylsilyl]oxy-dimethylsilyl]oxy-dimethylsilane Octasiloxane,1,1,1,3,3,5,5,7,7,9,9,11,11,13,13,15,15,15-octadecamethyl- Octasiloxane, octadecamethyl- DK821