C18H17N5O2	F(000) = 704
Mr = 335.37	Dx = 1.375 Mg m−3
Monoclinic, P21/c	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybc	Cell parameters from 8027 reflections
a = 10.4449 (5) Å	θ = 3–24°
b = 7.7754 (4) Å	µ = 0.09 mm−1
c = 20.2119 (10) Å	T = 170 K
β = 99.354 (1)°	Block, yellow
V = 1619.65 (14) Å3	0.40 × 0.32 × 0.11 mm
Z = 4