2-octadecanoyl-3-O-(2,4S,6S-trimethyl-2E-tetracosenoyl)-6-O-(2,4S,6S-trimethyl-2E-hexacosenoyl)-2'-O-(2S,4S,6S-trimethyl-3S-hydroxy-tetracosanoyl)-4'-O-(2,4S,6S-trimethyl-2E-docosenoyl)-alpha,alpha-trehalose