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

salmeterol salmeterola salmeterole adrenergic receptor asthma copd chronic obstructive pulmonary disease breathing bronchospasm inhaler powder metered dose metereddose beta2 adrenoreceptor laba vasodilation vasodilator hydrogen carbon nitrogen oxygen drug therapy medicine medicinal product pharmacology pharmacy pharmaceutical pharma treatment generic molecule atoms chemical chemistry composition atomic model molecular