<unk> <unk> <unk> <unk> <unk>  Passage: Isomers having different medical properties are common; for example, the placement of methyl groups. Passage: Isomers having different medical properties are common; for example, the placement of methyl groups. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk> Another example of this occurs in the phenethylamine-based stimulant drugs.<unk> Another example of this occurs in the phenethylamine-based stimulant drugs. Phentermine is a non-chiral compound with a weaker effect than that of amphetamine.<unk> Phentermine is a non-chiral compound with a weaker effect than that of amphetamine.<unk> Phentermine is a non-chiral compound with a weaker effect than that of amphetamine. It is used as an appetite-reducing medication and has mild or no stimulating properties.<unk> It is used as an appetite-reducing medication and has mild or no stimulating properties. However, a different atomic arrangement gives dextromethamphetamine, which is a stronger stimulant than amphetamine.<unk> However, a different atomic arrangement gives dextromethamphetamine, which is a stronger stimulant than amphetamine.<unk> However, a different atomic arrangement gives dextromethamphetamine, which is a stronger stimulant than amphetamine.  Question: What is found in chocolate that has the common effect of chocolate?<unk>Question: What is found in chocolate that has the common effect of chocolate?
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