Table 2. Experimental details.

Crystal data
Chemical formula	C21H29NO7
M r	407.45
Crystal system, space group	Monoclinic, P21
Temperature (K)	173
a, b, c ()	9.3235(3), 5.4118(1), 20.4381(7)
()	96.748(1)
V (3)	1024.10(5)
Z	2
Radiation type	Mo K
(mm1)	0.10
Crystal size (mm)	0.32 0.31 0.20
Data collection
Diffractometer	Nonius KappaCCD
No. of measured, independent and observed [I > 2(I)] reflections	5535, 3279, 2597
R int	0.034
(sin /)max (1)	0.705
Refinement
R[F 2 > 2(F 2)], wR(F 2), S	0.045, 0.100, 1.03
No. of reflections	3279
No. of parameters	270
No. of restraints	1
H-atom treatment	H atoms treated by a mixture of independent and constrained refinement
max, min (e 3)	0.23, 0.21

Computer programs: KappaCCD Server Software (Nonius, 1997 ▸), HKL DENZO and SCALEPACK (Otwinowski Minor, 1997 ▸), SIR2011 (Burla et al., 2012 ▸), Mercury (Macrae et al., 2008 ▸), SHELXL97 (Sheldrick, 2008 ▸), PLATON (Spek, 2009 ▸) and publCIF (Westrip, 2010 ▸).