英文名称: | 3-pyridinecarboxylic acid, 2-(3,4-dihydro-6-hydroxy-2,5,7,8-tetramethyl-2h-1-be | nzopyran-2-yl) ethyl ester | 3,4-dihydro-2-nicotinoyloxyethyl-2,5,6,7,8-tetramethyl-2h-benzopyran-6-ol | 3-pyridinecarboxylic acid,2-(3,4-dihydro-6-hydroxy-2,5,7,8-tetramethyl-2h-1-benzopyran-2-yl)ethyl ester |
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