Some stuff...

[Acies]

yeah, but you could name the category as your mapname (not meaning storyname, but mapname). Under that you can save all messages for that specific area. Then it becomes easier to see which message goes where.

Still an unexpected { ?

You could put the chemical container in your entities/items folder which is located in your amnesia directory. However as you are making a custom map, put it in: amnesia/custom stories/"your story"/entities/items, which will make it easier when sharing the map with other users!