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On the basis of electronic and vibrational spectroscopic data,
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Acknowledgment. This work has been supported by the
Natural Science Foundation of China (20703067 and 20803091).
Z.J.P. acknowledge the support from Renmin University of
China (RUC No. 10XNI007), and L.H.S. is grateful for support
from the Danish Research Council for Technology and Produc-
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Supporting Information Available: Synthetic protocols of
3′(14′-apo-ꢀ-carotene-14′-carbonyl)-daidzein (retinylisofla-
vonoid), optimized molecular geometry of C22-aldehyde, and
cyclic voltammetry. This material is available free of charge
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