(2'E,1'S,6R,3aS,6aR)-6-[10',10'-ethylenedioxy-1'-(4-methoxybenzyloxy)-hexadec-2'-en-1'-yl]-3a-(4-methoxybenzyloxymethyl)-2-phenyl-6,6a-dihydro-3aH-furo[3,4-d]oxazol-4-one