And then for this side chain group, where above 8.3, we're at eleven. And so that means we have a charge of negative one. And for the final group, we see that we have the terminal Kurbano group. So this that will have a negative charge as well, because eleven is above the PKA of this side chain group. And so if we sum up these charges, 1234 negative charges. And so that means we have full charge, or not a full charge, but a net charge of negative four.