Melatonin chemical formula logo. control of the sleep wake cycle. Neurotransmitter and human hormones in brain, medical poster isolated flat vector illustration.
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melatonin sleep vector icon structure hormone chemical molecule concept medicine melatonina disorder dream illustration molecular logo organic brain formula anxiety biochemistry compound stress technology neurotransmitter hormones chemistry biology symbol science line isolated medical health endocrinology poster hormonal abstract peptide endorphin schema background connection design education flat white
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