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Structural formula of catechins. C, EC, GC, EGC, CG, GCG, ECG, and EGCG are short for (+)-catechin, (−)-epicatechin, (−)-gallocatechin, (−)-epigallocatechin, (−)-catechin gallate, (−)-gallocatechin gallate, (−)-epicatechin gallate, and (−)-epigallocatechin gallate.
