Sell: Poly {6-[1,1,3,3-tetramethyl butyl) amino] -1,3,5-triazine-2,-4-diyl] [2,2,6,6, tetramethyl-4-piperidinyl] imino]-1,6-hexanediyl[(2,2,6,6-tetramethyl-4-piperidinyl)iminio]}