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... YCODEIN ... (3 elements)

... CODEIN ... (27 elements)

ACETYLDIHYDROCODEINONE · APOCODEINE · CODEIN · CODEINONA · CODEINONE · DIHYDROCODEINONE · DIHYDROHYDROXYCODEINONE · HYDROCODEINONEBITARTRATE · HYDROXYCODEINON · OXYCODEINON

... YCODEI ... (3 elements)

DIHYDROHYDROXYCODEINONE · HYDROXYCODEINON · OXYCODEINON

... XYCODEIN ... (3 elements)

DIHYDROHYDROXYCODEINONE · HYDROXYCODEINON · OXYCODEINON

... YCODEINO ... (3 elements)

DIHYDROHYDROXYCODEINONE · HYDROXYCODEINON · OXYCODEINON