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