In Table 1, the lubricant {HEAD ~ No 2} has {TAIL ~ the following basic structure}: 
has
In Table 1 , the lubricant { HEAD ~ No 2 } has { TAIL ~ the following basic structure } :
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH