Dithiocarbonic acid S-methyl ester O-[1-((2S,3R,4S,5R,6R)-3,4,5-tris-benzyloxy-6-benzyloxymethyl-tetrahydro-pyran-2-yl)-2-((2R,3R,4S,5S,6S)-3,4,5-tris-benzyloxy-6-methoxy-tetrahydro-pyran-2-yl)-ethyl] ester

1-((2S,3R,4S,5R,6R)-3,4,5-Tris-benzyloxy-6-benzyloxymethyl-tetrahydro-pyran-2-yl)-2-((2R,3R,4S,5S,6S)-3,4,5-tris-benzyloxy-6-methoxy-tetrahydro-pyran-2-yl)-ethanol