{HEAD ~ Compounds} containing any combination of {TAIL ~ substituents} or members of the Markush groups specified above are within the scope of the invention 
{ HEAD ~ Compounds } containing any combination of { TAIL ~ substituents } or members of the Markush groups specified above are within the scope of the invention
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH