methyl 2-O-benzyl-4,6-tri-O-benzylidene-3-O-(2,3,4,6-tetra-O-benzyl-5a-carba-α-D-mannopyranosyl)-α-D-mannopyranoside

methyl 2-O-benzyl-4,6-O-benzylidene-3-O-(2-O-acetyl-4,6-O-benzylidene-3-O-methyl-α-D-mannopyranosyl)-α-D-mannopyranoside