K. Peters et al., Crystal structure of (1R*,8R*,11R*)-dimethyl 1-diacetoxymethyl-11-methoxybicyclo[6.2.1]undec-9-ene-9,10-dicarboxylate, C11H14(COOCH3)(2)[CH(OCOCH3)(2)]OCH3, Z KRIST-NEW, 214(1), 1999, pp. 97-98
C21H30O9, triclinic, P (1) over bar (No. 2), a = 7.892(1) Angstrom, b = 9.5
22(1) Angstrom, c = 15.526(1) Angstrom, alpha = 86.38(1)degrees, beta = 81.
67(1)degrees, gamma = 78.29(1)degrees, V = 1129.7 Angstrom(3), Z = 2, R-gt(
F) = 0.070, R-w(F) = 0.078, T = 293 K.