a curing agent comprising {HEAD ~ a plurality} of groups that are reactive with {TAIL ~ the functional groups} on compound  
are reactive with
a curing agent comprising { HEAD ~ a plurality } of groups that are reactive with { TAIL ~ the functional groups } on compound
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH