1 P0G 8-[(1r)-2-{[1,1-dimethyl-2-(2-methylphenyl)ethyl]amino}-1-hydroxyethyl]-5-hydroxy-2h-1,4-benzoxazin-3(4h)-one 1.000 2 DZQ Olodaterol 0.833 3 WHJ Carmoterol 0.800 4 XQC 4-[(1r)-1-hydroxy-2-{[1-(4-hydroxyphenyl)-2-methylpropan-2-yl]amino}ethyl]benzene-1,2-diol 0.724