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A为只含有C、H、O三种元素的芳香烃衍生物，且芳环上只有两个取代基．各物质间的相互转化关系如图所示． 已知：ROH+HX △ RX+H 2 O；E为高分子化合物，分子式为（C 9 H 8 O 2 ） n ；H分子式为C 18 H 16 O 6 ；I中除含有一个苯环外还含有一个六元环． （1）写出A、E、I的结构：A______、E______、I______； （2）写出F→G的化学反应方程式：______； （3）B→C的反应条件为______；A+G→H的反应类型为______； （4）有机物A的同分异构体只有两个对位取代基，既能与Fe 3+ 发生显色反应，又能发生水解反应，但不能发生反应．则此类A的同分异构体有______种，其中一种在NaOH溶液中加热消耗的NaOH最多．写出该同分异构体与NaOH溶液加热反应的化学方程式：______．
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