vilanterol copd drug molecule. atoms are represented as spheres with conventional color coding: hydrogen (white), carbon (grey),

vilanterol vilanterole beta2 beta agonist copd chronic obstructive disease lung pneumology adrenergic smooth muscle asthma airway metered dose metereddose inhaler aerosol hydrogen carbon oxygen nitrogen chlorine drug therapy medicine medicinal product pharmacology pharmacy pharmaceutical pharma treatment generic molecule atoms chemical chemistry composition atomic model molecular