Crystal Structure of ?

Id4000990
Chemical name ?
a (Å)5.49484(16)
b (Å)5.42153(17)
c (Å)11.3721(4)
α (°)90.0
β (°)90.0
γ (°)90.0
V (Å3)338.780(19)
Space groupP 21 a m