furan,formazyl
Furan
53625-15-3(3R,5S,5aR)-5-(3-Furyl)-3,4,5,5,5aα,7,8,8aα-octahydro-7α-methylspiro[furan-3(2H),6-[6H]naphtho[1,8-bc]furan]-2,2(4H)-dione
160791-17-3[6,9'-Binaphtho[1,2-b]furan]-2,2'(3H,3'H)-dione,eicosahydro-9-hydroxy-5a,5'a,9,9'-tetramethyl-3,3'-bis(methylene)-, [3aR-[3aa,5aa,6a(3'aR*,5'aR*,9'S*,9'aR*,9'bS*),9b,9ab,9ba]]-