I've constructd some molecules using an external program and would like to import them to materials studio. Bond order is important and I'd like to import this data too, rather than allowing MS to calculate it.

I've tested importing the attached PDB file of benzene but both the visualiser and properties explorer state that all bonds are single. The attached file contains info on connectivitiy and relevent bonds are described twice (i.e. a double bond).

How do I get MS to recognise the connectivity of an imported molecule? is PDB format acceptable? Is there some other format I could use?