1,3,2-dioxaborinane, 2-(1-hexynyl)-5,5-dimethyl- 2-hex-1-yn-1-yl-5,5-dimethyl-1,3,2-dioxaborinane InChI=1/C11H19BO2/c1-4-5-6-7-8-12-13-9-11(2,3)10-14-12/h4-6,9-10H2,1-3H