1,1-[2-[[3-[3,5-Bis(1,1-dimethylethyl)-4-hydroxyphenyl]-1-oxopropoxy]methyl]-2-(hydroxymethyl)-1,3-propanediyl] bis[3,5-bis(1,1-dimethylethyl)-4-hydroxybenzenepropanoate], Pentaerythritol Tris Ester with 3-(3,5-Di-tert-butyl-4-hydroxyphenyl)propionic Aci