tokens: Retinoic acid ( RA ) , a vitamin A derivative , exerts a wide range of biological effects related to cell proliferation and differentiation .
folded_tokens: retinoic acid ( ra ) , a vitamin a derivative , exerts a wide range of biological effects related to cell proliferation and differentiation .
labels: O O O B-other_organic_compound O O O B-lipid I-lipid O O O O O O O O O O O B-other_name I-other_name O B-other_name O