Correction to: Nature Chemistry https://doi.org/10.1038/s41557-021-00660-y, published online 8 April 2021.

In the version of this Article originally published, in Fig. 2e the stereochemistry of the linker in the Asp and Lys residues of compounds LFluo and LH were incorrectly shown as (R); they should have been shown as (S). An error in the linker structure also appeared in compounds 39 and 56 on page 53 of the Supplementary Information. In addition, the ELISA curves in Fig. 5c were incorrectly assigned to compounds 29 and 30; they should have been assigned to compounds 27 and 28, respectively. These corrections have now been made.