Does the C++17 standard guarantee that the address of a union is the same as the address of its members?

Question

I am currently working on programming a pool allocator. My question boils down to the following code:

template <typename T>
union myUnion {
    T data;
    myUnion<T>* nextUnion;
};

void someFunction(){
    myUnion<T> mu;
    T* t = new (std::addressof(mu.data)) T();
    //some code
    myUnion<T>* mu2 = reinterpret_cast<myUnion<T>*>(t);
}

Is the address of mu always the same as mu2?