C20H21N3O3	F(000) = 744
Mr = 351.40	Dx = 1.286 Mg m−3
Monoclinic, P21/c	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybc	Cell parameters from 6153 reflections
a = 12.5584 (8) Å	θ = 2.4–28.2°
b = 10.4752 (7) Å	µ = 0.09 mm−1
c = 14.6002 (9) Å	T = 100 K
β = 109.039 (1)°	Prism, colourless
V = 1815.6 (2) Å3	0.35 × 0.25 × 0.15 mm
Z = 4