Bruker APEXII CCD diffractometer	2441 reflections with I > 2σ(I)
φ and ω scans	Rint = 0.039
Absorption correction: multi-scan (SADABS; Bruker, 2013)	θmax = 70.2°, θmin = 4.0°
Tmin = 0.578, Tmax = 0.753	h = −15→15
23789 measured reflections	k = −7→7
2683 independent reflections	l = −21→21