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1,3,5,7-Tetravinyl-1,3,5,7-tetramethylcyclotetrasiloxane | 2,4,6,8-Tetramethyl-2,4,6,8-tetravinyl cyclotetrasiloxane | 2,4,6,8-Tetramethyltetravinylcyclotetrasiloxane | 2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane and 2,4,6,8-Tetramethyl-2,4,6,8-tetravinyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane