need help in research room

[xxxaccion1]

hello im stuck in the research room
im speak english but not very well.
i dont know the order of the sustances
i read the note but i dont understan very well
what button i need to press first?
anyone knows the order of the buttons?
please help me
thanks bye!!

[Yuhaney]

Try This video!
It shows you the order of the buttons.