methyl 3,4,6-tri-O-benzyl-2-O-(3,4-di-O-benzyl-2-O-methylsulfonyl-α-D-mannopyranosyl)-α-D-mannopyranoside

methyl 3,4,6-tri-O-benzyl-2-O-(3,4-di-O-benzyl-2-O-methylsulfonyl-β-D-mannopyranosyl)-α-D-mannopyranoside