bis-((-)-Pinanediolato)diboron

bis[(1s,2s,3r,5s)-pinanediolato]diboron ; bis[(+)-pinanediolato]diboron ; (-)-bis(pinanediolato)diborane, (3ar,3'ar,4r,4'r,6r,6'r,7as,7'as)-(-)-dodecahydro-3a,3'a,5,5,5',5'-hexamethyl-2,2'-bi-4,6-methano-1,3,2-benzodioxaborole ; bis(1s,2s,3r,5r)(+)-pinanediolato)diboron ; bis((1s,2s,3r,5r)(+)-pinanediolato)diboro