Some Well-known Aromatic Compounds CO2H O OCCH3 acetyl salicylic acid ibuprofin HO2C HO2C. CH3 CH2CNH CH3 NH penicillin G COH lysergic acid OH OH morphine Some Well-known Aromatic Compounds CO2H OCCH3 O acetyl salicylic acid HO2C ibuprofin N NH HO2C CH3 lysergic acid N S CO2H CH2CNH O penicillin G O OH OH N CH3 morphine