C21H29NO7	F(000) = 436
Mr = 407.45	Dx = 1.321 Mg m−3
Monoclinic, P21	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: P 2yb	Cell parameters from 11906 reflections
a = 9.3235 (3) Å	θ = 1.0–30.0°
b = 5.4118 (1) Å	µ = 0.10 mm−1
c = 20.4381 (7) Å	T = 173 K
β = 96.748 (1)°	Block, colourless
V = 1024.10 (5) Å3	0.32 × 0.31 × 0.20 mm
Z = 2