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Keywords from Image Description:
Tetracycline ABCD num.svg Allgemeine Struktur von Tetracyclinen Ringe beschriftet Kohlenstoffatome nummeriert Generic structure of tetracycline antibiotics rings labelled carbons numbered own NEUROtiker Own work all rights released Public domain de einfach Ringe beschriftet Ringe beschriftet und nummeriertbr plain rings labelled