17995-33-4;1,3,5,7-Tetramethyl-1,3,5,7-tetrasilaadamantane;1,3,5,7-Tetrasilatricyclo[3.3.1.1<3,7>]decane,1,3,5,7-tetramethyl)-;1,3,5,7-Tetrasilatricyclo[3.3.1.13,7]decane,1,3,5,7-tetramethyl)-;1,3,5,7-Tetrasilatricyclo(3.3.1.13,7)decane, 1,3,5,7-tetramethyl-