(2S,3R,4E)-2-(Tetracosanoylamino)-1-[4-O-[4-O-[3-O-(2-acetylamino-2-deoxy-β-D-galactopyranosyl)-α-D-galactopyranosyl]-β-D-galactopyranosyl]-β-D-glucopyranosyloxy]-4-octadecen-3-ol