Merge Beilstein and Reaxys
Beilstein is now part of Reaxys. Check the Chebi database and see if the identifiers match, if they do - then only display the Reaxys identifier on the website, and mark the Beilstein identifier as deleted. There will be entries that only have Beilstein IDs, for these entries check manually if the Reaxys IDs are the same or no