See how to use this script as a video tutorial.
Type in a text file where all the DOIs are indicated by "(DOI:10.1063/1.4975327)" with nothing after it on the line (the ".docx" CV extracted from Research Gate works). Then click on the « Launch extraction » button.. The list of DOI entered should be given. You can then use this list of DOI to check if they are on HAL.Extract DOI from text in another format