Thus, for example, if R1 and R2 are {HEAD ~ methyl groups}, the hydroformylation will produce {TAIL ~ an aldehyde} in which R3 is an ethyl group 
Thus , for example , if R1 and R2 are { HEAD ~ methyl groups } , the hydroformylation will produce { TAIL ~ an aldehyde } in which R3 is an ethyl group
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH