((S)-3,4-Dihydroxy-butyl)-phosphonic acid benzyl ester (1S,2R,3R,4S,5S,6R)-2,3,5,6-tetrakis-benzyloxy-4-(4-methoxy-benzyloxy)-cyclohexyl ester

rac-(3a'R,4a'R,7a'R,8a'S)-4'-(allyloxy)-8'-((4-methoxybenzyl)oxy)hexahydrodispiro[cyclohexane-1,2'-benzo[1,2-d:4,5-d']bis([1,3]dioxole)-6',1''-cyclohexane]