fenoterol1-(3,5-dihydroxyphenyl)-1-hydroxy-2-((4-hydroxyphenyl)isopropylamino)ethane1-(p-hydroxyphenyl)-2-((beta-hydroxy-beta-(3',5'-dihydroxyphenyl))ethyl)aminopropane3,5-dihydroxy-alpha-(((p-hydroxy-alpha-methylphenethyl)amino)methyl)benzyl alcohol5-{1-Hydroxy-2-[2-(4-hydroxy-phenyl)-1-methyl-ethylamino]-ethyl}-benzene-1,3-diolphenoterol