1 3 5 7 tetravinyl 1 3 5 7 tetramethylcyclotetrasiloxane July 8, 2019 16 32 64 128 2 4 6 8-tetramethyl-2 4 6 8-tetravinylcyclotetrasiloxane 1 1 3 3-tetramethyl-1 3-divinyldisiloxane 1 3-divinyl-1 1 3 3-tetramethyldisiloxane