What's the process for converting this to degC?

```rust
        let vrefint = adc.read_internal(&mut vrefint_channel);
        info!("vrefint: {}", vrefint);
        let measured = adc.read(&mut p.PC0);
        info!("measured: {}", measured);
```

```
4.342346 INFO  vrefint: 24575
└─ stm32h747_async_quickstart::____embassy_main_task::{async_fn#0}::log2minus1 @ src/main.rs:280 
4.342346 INFO  measured: 14974
└─ stm32h747_async_quickstart::____embassy_main_task::{async_fn#0}::log2minus1 ````