Synonyms: 4aH-7a,15-endo-Oxiranonaphtho[2',3':4,5]cyclohepta[1,2-b]xanthene-4a-carboxylicacid,6-chloro-2,3,4,7,8,13,15,17-octahydro-1,4,9,12,14,16-hexahydroxy-18-(hydroxymethyl)-8,13,17-trioxo-,methyl ester, [4R-(4a,4ab,7ab,15b,18S*,20S*)]-; (+)-Beticolin 4; Beticolin 4