Synonyms: Antibiotic K 178;Antibiotic M 2;Antibiotic X 464;Azalomycin M;Helixin C;Polyetherin A;Stereoisomer oftetrahydro-6-[[9-methoxy-2,4,10-trimethyl-2-[octahydro-2,3'-dimethyl-5'-[tetrahydro-6-hydroxy-6-(hydroxymethyl)-3,5-dimethyl-2H-pyran-2-yl][2,2'-bifuran]-5-yl]-1,6-dioxaspiro[4.5]dec-7-yl]methyl]-a,3-dimethyl-2H-pyran-2-aceticacid;X 464;