1H Hz, 1H), 4.38 (m, 1H), 3.80 (m, 1H), 3.15 (m, 1H), 3.06 (m, 1H), 2.22 (m, 1H), 2.07 (m, 1H), 1.98 (m, 1H), 1.63–1.51 (m, 4H), 1.36 (m, 9H), 1.24 (m, 4H), 0.83 (t, J = 8 Hz, 3H); MS (ESI+) for C19H32ClN3O5m/z 418.1 (M + H)+.