K. Peters et al., Crystal structure of trans-(1S,2S)-di(carboxy-(1R)-menthol)-bicyclo[2.2.2][3,4a : 5,6a]dibenzooctane, C16H12[(COO)(C6H9(C3H7)(CH3))](2), Z KRIST-NEW, 215(1), 2000, pp. 27-28
C38H50O4, orthorhombic, P2(1)2(1)2(1) (No. 19), a = 9.014(1) Angstrom, b =
13.376(2) Angstrom, c = 28.579(4) Angstrom, V = 3445.8 Angstrom(3), Z = 4,
R-gt(F) = 0.068, wR(F) = 0.059, T = 293 K.