Try the Materials Informatics Toolkit, which is designed to easily handle SMILES data. This and other helpful add-ins are available in the JMP® Marketplace
If you hover over the File Exchange option under "Community" and select "Add-ins", the next window that pops up has the "Upload Add-in" button. However, if you insead click on "File Exchange" and then from the next window that pops up, select "Add-ins" the window that pops up does not have the "Upload Add-in" button.