If you like the Jmol text filter, you might also like the Jmol "resource" type.
http://docs.moodle.org/en/Jmol_resource_module
For most flexibility it's worth having both the filter and the resource type. But this resource type should provide a nice straightforward way to add a viewer (as in the attached image) as a single Moodle resource.
Hmmm. Thanks for the link. It seems to be a very limited piece of software! It doesn't even display bonds between atoms, the mouse rotation is counter-intuitive, and the XML spec for the data files looks ropey to me.
Maybe one day it will be a useful tool but it's a million miles behind what Jmol can do!
Maybe one day it will be a useful tool but it's a million miles behind what Jmol can do!