Crystal Structure of ?

Id4303319
Chemical name ?
a (Å)18.8385(3)
b (Å)18.8385(3)
c (Å)33.9644(6)
α (°)90
β (°)90
γ (°)90
V (Å3)12053.6(3)
Space groupI 41/a :2
Temperature (K)293