63844-12-2

2,2,4-Pentanetricarboxylic acid,1-[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]-,2,2-bis(1,2,2,6,6-pentamethyl-4-piperidinyl)4-(2,2,6,6-tetramethyl-4-piperidinyl) ester