Correction to: Nature https://doi.org/10.1038/s41586-022-04516-4 Published online 27 April 2022

In the version of this article initially published online, there was a typographical error in the description of the labelling experiments. The employed in situ-formed N15N18O is expected to be approximately 23% labelled, instead of the originally written 45%. This value remains correctly described in the Supplementary Information.