adenosine
alkaloid
atomic
atoms
bond
caffein
caffeinated
caffeine
chemical
chemistry
coffee
coffeine
cola
composition
compound
decaffeinated
decaffeination
dependence
drink
energy
formula
guarana
intoxication
jitters
kola
model
molecular
molecule
receptor
soft
stimulant
structure
tea
withdrawal
xanthine
yerba
定額
Caffeine stimulant molecule. Present in coffee, tea and many soft and energy drinks. Stylized 2D rendering and conventional skeletal formula.の素材 [FY31027509674]
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