C++ Align both multiline string and binary operator

Hi,

I'm trying to align strings in C++, like in code section below.

auto string = "first line"
              "second line"
              "left" + QString::number(10) + "right"
              "last line"

Or maybe like this

auto string ="first line"
        "second line"
        "left" + QString::number(10) + "right"
        "last line"

but even when i disabled all "align when multiline" checkboxes in settings, formatter (ctrl+alt+L by default) doing this:

auto string = "first line"
              "second line"
              "left" + QString::number(10) + "right"
                                             "last line"

I want last line to be aligned with first element above, or not aligned at all. How can I achieve this?

Thank you!