Synonyms: L-671,776;134313-74-9;ATCC 20928 factor B;AC1L3VE5;L 671776;L-671776;L 671,776;3,4'-dihydroxy-6'-(hydroxymethyl)-4,4,7,8a-tetramethylspiro[2,3,4a,5,6,7-hexahydro-1H-naphthalene-8,2'-3H-1-benzofuran]-5'-carbaldehyde;Spiro(benzofuran-2(3H),1'(2'H)-naphthalene)-5-carboxaldehyde, 3',4',4'a,5',6',7',8',8'a-octahydro-4,6'-dihydroxy-6-(hydroxymethyl)-2',5',5',8'a-tetramethyl-