You can use Microsoft Visual Studio 2010 to generate XSD from this XML file.
1. Create a Biztalk project (myTestProject.Schema)
2. Right click on the project and select Add –> Add Generated Items …
3. Select Generate Schema from Add Generated Items and select Generate Schema from the right pane
4. Select Well-Formed XML in the document type from Generate Schema window
5. Provide XML file in the input file or select it from the BROWSE
6. Finally press ok and the XSD file will generate.
Tayyab Siddiqui 