This demo was created in Excel 2007, with the Office XP Webservices toolkit. Using the spreadsheet, the formula InChiToSMILES invokes the corresponding ChemSpider web service.  How I made this: 1. Installed Office XP Webservices toolkit from the Microsoft Download Center. 2. In Excel 2007 I turned on the Developer tab (hit Office button, then Excel options). 3. In the Developer ribbon I selected Visual Basic 4. In Tools->Web Services References I selected Web Service URL and ente...