Poly(oxy-1,2-ethanediyl), ω-[[[[3-[(carboxyamino)methyl]-3,5,5-trimethylcyclohexyl]amino]carbonyl]oxy]-ω',ω''-dihydroxy-α,α',α''-1,2,3-propanetriyltris-, ester with α-hydro-ω-(9-octadecen-1-yloxy)poly(oxy-1,2-ethanediyl)