epigallocatechin gallate molecule, structural chemical formula, ball-and-stick model, image ester

epigallocatechin gallate ester catechin epigallocatechin3gallate molecule molecular structure chemical formula isolated model c22h18o11 atom chemistry compound atomic composition health extract antioxidant skeletal anticancer cancer egcg acid flavanoid flavanol polyphenol line gallic icon flat bond carbon oxygen science drawing hydrogen illustration disease education supplement medical medicine drug structural ball- -stick image ball- -stick ester