I'm trying the following query in a JSON reader:

https://gsrs.ncats.nih.gov/ginas/app/api/v1/substances/structureSearch?q=CCOC(N)=O&type=exact

The URL works fine from a browser, but the reader throws the following error:

Unable to read https://gsrs.ncats.nih.gov/ginas/app/api/v1/substances/structureSearch. Failed to connect to host gsrs.ncats.nih.gov: Error connecting TLS/SSL object to server: error:0A000086:SSL routines::certificate verify failed

Is there some way to get around this?