R2 and {HEAD ~ R3}, together with {TAIL ~ the carbon atom} to which they are bonded, are a cyclopropylidene, cyclobutylidene, cyclopentylidene, or cyclohexylidene 
together with
R2 and { HEAD ~ R3 } , together with { TAIL ~ the carbon atom } to which they are bonded , are a cyclopropylidene , cyclobutylidene , cyclopentylidene , or cyclohexylidene
OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH