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
I suspect the issue is a scoping issue. You may want to try setting up a new namespace and always assign dtf to the name space. That may eliminate the error you are getting.
I suspect the issue is a scoping issue. You may want to try setting up a new namespace and always assign dtf to the name space. That may eliminate the error you are getting.