Novelty search

Need to conduct a novelty search on the attached 36 molecules. The question I need to answer is whether each one is novel. I do not wish to search substructures, or similar structures. Only exact matches in patents and chemical literature. Additionally, the search should be executed against a CAS database such as STN. What I am looking for is a yes or no with respect to each compound. “Yes” if it is novel, and “no” if it is not. I would like to avoid sifting through a large volume a documents to determine whether the compounds are novel. It would be enough, for example, to provide a citation to a patent or journal article that teaches a given compound. Ideally, you would simply add the citation to the attached file in the “references” column. I should also add that the only database I am interested in is STN. I have already searched these structures on PubChem and Patentscope. The list I have provided to you is what is left after eliminating many other structures that were not novel.