Table 4. Experimental details.

Crystal data
Chemical formula	C16H18N2O3
M r	286.32
Crystal system, space group	Monoclinic, P21/n
Temperature (K)	120
a, b, c (Å)	7.4069 (9), 8.1959 (10), 24.133 (3)
β (°)	90.295 (2)
V (Å3)	1465.0 (3)
Z	4
Radiation type	Mo Kα
μ (mm−1)	0.09
Crystal size (mm)	0.37 × 0.29 × 0.24
Data collection
Diffractometer	Bruker SMART APEX CCD
Absorption correction	Multi-scan (SADABS; Krause et al., 2015 ▸)
T min, T max	0.91, 0.98
No. of measured, independent and observed [I > 2σ(I)] reflections	27503, 3966, 3354
R int	0.028
(sin θ/λ)max (Å−1)	0.688
Refinement
R[F 2 > 2σ(F 2)], wR(F 2), S	0.041, 0.120, 1.09
No. of reflections	3966
No. of parameters	192
H-atom treatment	H-atom parameters constrained
Δρmax, Δρmin (e Å−3)	0.43, −0.16

Computer programs: APEX3 and SAINT (Bruker, 2016 ▸), SHELXT (Sheldrick, 2015a ▸), SHELXL2014 (Sheldrick, 2015b ▸), ORTEP-3 for Windows (Farrugia, 2012 ▸), DIAMOND (Brandenburg, 2006 ▸) and publCIF (Westrip, 2010 ▸).