Crystal Structure of ?

Id7203948
Chemical name ?
a (Å)5.417(7)
b (Å)17.75(1)
c (Å)20.71(1)
α (°)90
β (°)96.94(2)
γ (°)90
V (Å3)1977(3)
Space groupP 1 21/n 1
Temperature (K)294