The smallest unit of a chemical compound, consisting of one or more atoms joined together
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C32H25IO2
2-(4-carboxybutyl)-9-methoxy-5,11-dimethyl-5a,6-dihydro-2H-pyrido[4,3-b]carbazol-2-ium chloride
N,N'-(4,5-dinitro-1,2-phenylene)bis(4-methylbenzenesulfonamide)
