英语翻译it is a very complicated problem which isn't the side th

it is a very complicated problem [which isn't] the side the speaker conveyed.
这是一个很复杂的问题,这个问题不像作者叙述的那样.
用词都挺好的,没问题.
which isnt 的表达方式很不地道 也不是很简洁
更为舒服和高级的句式可以写成：
This problem,rather than what the speaker conveyed,comes out to be very/quite complicated.