C21H34O3, orthorhombic, P212121 (no. 19), a = 7.5420(7) Å, b = 11.6929(11) Å, c = 22.657(2) Å, V = 1998.1(3) Å3 , Z = 4, Rgt(F) = 0.0383, wRref(F2 ) = 0.113, T = 293(2) K. CCDC no.: 1448533 The crystal structure is shown in the gure. Tables 1–3 contain details of the measurement method and a list of the atoms including atomic coordinates and displacement parameters.