C19H30N2O3, M(r) = 334.45, monoclinic, Pc, a = 9.933(2), b = 6.485(2), c = 14.869(2)Angstrom, beta = 99.82(2)degrees, V = 943.8(3)Angstrom(3), Z = 2, D-x = 1.18g.cm(-3), CuK alpha radiation (lambda = 1.54178 Angstrom). The final R indice is 0.042 for 1539 observed reflections.