(1R,10S)-10-hydroxy-1,6,6-trimethyl-10-(2-oxopropyl)-2,7,8,9-tetrahydro-1H-naphtho[1,2-g][1]benzofuran-11-one; Phenanthro(1,2-b)furan-11(2H)-one,1,6,7,8,9,10-hexahydro-10-hydroxy-1,6,6-trimethyl-10-(2-oxopropyl)-,(1R-trans); Phenanthro(1,2-b)furan-11(2H)-one,1,6,7,8,9,10-hexahydro-10-hydroxy-1,6,6-trimethyl-10-(2-oxopropyl)-,(1R,10S); Danshenol B