4,4,5,5,6,6,7,7,8,8,9,9,10,11,11,11-Hexadecafluoro-2-hydroxy-10-(trifluoromethyl)undec-1-yl acrylate3-(Perfluoro-7-methyloct-1yl)-2-hydroxypropyl acrylate4,4,5,5,6,6,7,7,8,8,9,9,10,11,11,11-Hexadecafluoro-2-hydroxy-10-(trifluoromethyl)undec-1-yl prop-2-enoate