epigallocatechin gallate (egcg) green tea polyphenol molecule. has antioxidant properties and may contribute to health effects of

epigallocatechin gallate egcg gallic acid catechin tea antioxidant flavanoid flavanol anticancer cancer green extract polyphenol health molecule atoms atomic model molecular compound composition chemical chemistry bond structure formula blackboard chalkboard chalk written writing drawing background ring line skeletal flat icon stylized style