Table 3. Experimental details.

Crystal data
Chemical formula	2C18H19ClN4O·HCl
M r	722.10
Crystal system, space group	Tetragonal, I4/m
Temperature (K)	100
a, c (Å)	17.305 (2), 26.040 (5)
V (Å3)	7798 (3)
Z	8
Radiation type	Synchrotron, λ = 0.710757 Å
μ (mm−1)	0.28
Crystal size (mm)	0.06 × 0.05 × 0.04
Data collection
Diffractometer	ADSC Quantum 210r
No. of measured, independent and observed [I > 2σ(I)] reflections	66433, 5901, 5096
R int	0.049
(sin θ/λ)max (Å−1)	0.741
Refinement
R[F 2 > 2σ(F 2)], wR(F 2), S	0.049, 0.138, 1.03
No. of reflections	5901
No. of parameters	231
H-atom treatment	H atoms treated by a mixture of independent and constrained refinement
Δρmax, Δρmin (e Å−3)	0.81, −0.49

Computer programs: AS QEGUI, XDS (Kabsch, 1993 ▸), SHELXT (Sheldrick, 2015a ▸), SHELXL2016/6 (Sheldrick, 2015b ▸), Mercury (Macrae et al., 2020 ▸) and WinGX (Farrugia, 2012 ▸).