I’ve white balanced your image and this is what I get:
the sample points show where I measured the white point, with a 32 px pipette
The only extra things I’ve done are:
- chromatic aberrations auto-correction
- activate noise reduction just for auto-chroma-noise-reduction
An here is a crop where the sample points are:
not every sample is R=G=B, but most of them are
Not sure if this helps