4-((((1,1'-BIPHENYL)-4-YLCARBONYL)OXY)METHYL)HEXAHYDRO-2-OXO-2H-CYCLOPENTA(B)FURAN-5-YL (1,1'-BIPHENYL)-4-CARBOXYLATE, (3AR,4S,5R,6AS)-
4-((((1,1'-biphenyl)-4-ylcarbonyl)oxy)methyl)hexahydro-2-oxo-2h-cyclopenta(b)furan-5-yl (1,1'-biphenyl)-4-carboxylate, (3ar,4s,5r,6as)-