Compounds of the invention include {HEAD ~ all those compounds} with {TAIL ~ the isoalloxazine backbone} : 
with
Compounds of the invention include { HEAD ~ all those compounds } with { TAIL ~ the isoalloxazine backbone } :
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH