The funding sources are corrected below.
G.C. thanks the European Research Council for ERC Consolidator Grant RAMSES, Project No. 683083. This work was supported by the Research Training group ‘Confinement-controlled Chemistry’, funded by the Deutsche Forschungsgemeinschaft (DFG) under Grant GRK2376/331085229. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 798103 (S.P.).