1,3,2-dioxaborolane, 2,2'-(1,3-propanediyl)bis- 2,2'-propane-1,3-diylbis(1,3,2-dioxaborolane) InChI=1/C7H14B2O4/c1(2-8-10-4-5-11-8)3-9-12-6-7-13-9/h1-7H