表儿茶素,中文别名:2-(3,4-羟基苯基)-3,4-二氢-2h-1-苯并吡喃-3,5,7-三醇; ec,英文别名:2-(3,4-dihydroxyphenyl)-2,3,4-trihydro-3,5,7-trihydroxychromene