@252056 no, but I would model it out as you may have assumed something that won't occur.
For example, assume the tax on the capital gains is $15,000 and you file Single. If you are in the 22% tax bracket that would imply a charitable contribution of $68,000 to create a tax deduction that reduces taxes by $15,000.
Deductions do not reduce taxes dollar for dollar. Only tax credits can do that.
