(2S,3S,2'R,3'R)-3'-(3,5-Dihydroxy-phenyl)-2,2'-bis-(4-hydroxy-phenyl)-4-[(E)-2-(4-hydroxy-phenyl)-vinyl]-2,3,2',3'-tetrahydro-[3,4']bibenzofuranyl-6,6'-diol AIDS-106436 AIDS106436 Miyabenol C