1-Piperidinyloxy,2,2,6,6-tetramethyl-4-[[2,2,4,5,5,7,8,8,10,11,11,13,13,13-tetradecafluoro-1-oxo-4,7,10-tris(trifluoromethyl)-3,6,9,12-tetraoxatridec-1-yl]amino]-