... 2,6-dideoxy-3-O-methyl-a-L-arabino-hexopyranosyl)-3-O-methyl-a-L-arabino-hexopyranoside (i) mixture with ( ... 2,6-dideoxy-3-O-methyl-a-L-arabino-hexopyranosyl)-3-O-methyl-a-L-arabino-hexopyranoside (ii) (4:1); ... -44-39(48)28(6)18-34(45(50)57-33)47(31,44)51)58-38-21-36( ... -15,17-19,25-26,28,30-31,33-45,49-50,52H,11,16,20-24H2,1-10H3;11 ... 44+,45-,47-,48-;25-,27-,29-,30-,32+,33-,34-,35-,36-,37-,38-,39+,40-,41+,42 ...