The Barium stannate with cas registry number of 12009-18-6, it has other registry number 52907-83-2. Its system generated number is 0012009186. Its IUPAC name is barium(2+); oxygen(2-); tin(4+); and it is also called Barium tin oxide (BaSnO3).

Physical properties about this chemical are: (1)H-Bond Donor: 0 ; (2)H-Bond Acceptor: 3 ; (3)Rotatable Bond Count: 0 ; (4)Exact Mass: 305.792181 ; (5)MonoIsotopic Mass: 305.792181 ; (6)Topological Polar Surface Area: 3 ; (7)Heavy Atom Count: 5 ; (8)Formal Charge: 0 ; (9)Complexity: 0 ; (10)Isotope Atom Count: 0 ; (11)Defined Atom StereoCenter Count: 0 ; (12)Undefined Atom StereoCenter Count: 0 ; (13)Defined Bond StereoCenter Count: 0 ; (14)Undefined Bond StereoCenter Count: 0 ; (15)Covalently-Bonded Unit Count: 5.

When you are using this chemical, please be cautious about it as the following: 
Barium stannate is also harmful by inhalation and if swallowed. So avoid to breathe dust.After contact with skin, wash immediately with plenty of soap-suds.

You can still convert the following datas into molecular structure:
(1)InChI: InChI=1/Ba.3O.Sn/q+2;3*-2;+4;
(2)Smiles: [Ba+2].[Sn+4].[OH2-2].[OH2-2].[OH2-2]