2-氧代环戊烷-1-甲腈;
2-oxo-cyclopentanecarbonitril;2-ketocyclopentanecarbonitrile;Cyclopentanon-(2)-carbonsaeure-(1)-nitril;Cyclopentan-1-one-2-carbonitrile;2-Oxo-cyclopentancarbonitril;
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