K. Peters et al., Crystal structure of (1 '' R*,3 ' R*,3aR*,4S*,5S*,8aR*)-dimethyl decahydro-3,5-(3 ',5-bromomethano-2 '-oxapropanylidene)-8-oxo-azulene-3a,4-dicarboxylate, (COOCH3)(2)C13H13O2Br, Z KRIST-NEW, 214(1), 1999, pp. 93-94
C17H19BrO6, orthorhombic, Pbca (No. 61), a = 9.931(1) Angstrom, b = 14.630(
2) Angstrom, c = 23.572(3) Angstrom, V = 3424.8 Angstrom(3), Z = 8, R-gt(F)
= 0.054, R-w(F) = 0.045, T = 293 K.