C25H27NO7 is monoclinic, P21/n. The unit-cell dimensions at 293 K are a = 14.031(1), b = 10.717(1), c = 32.093(3)A, β = 94.633(2)°, V = 4810.1(7)A3, Dx = 1.252 g/cm3, and Z = 8. The R value is R = 0.065 for 8486 reflections. The isoxazol rings adopt a half-chair conformation. The molecule is stabilized by several C-H…O intermolecular contacts.