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http://www.rcsb.org/pdb/search/smart.do?smartSearchSubtype_0=ChemSmilesQuery&searchType_0=Exact&polymericType_0=Any&smartComparator=and&target=Ligand&smiles_0=CC%28C%29ON%28C%28CCNC%28%3DO%29CCCNC%28%3DO%29c1cccc%28c1%29C%28%3DO%29NCCCC%28%3DO%29NCCC%28N%28OC%28C%29C%29S%28%3DO%29%28%3DO%29c1ccc%28cc1%29-c1ccccc1%29C%28%3DO%29NO%29C%28%3DO%29NO%29S%28%3DO%29%28%3DO%29c1ccc%28cc1%29-c1ccccc1

It has been permanently removed as part of our announced shutdown on December 9th, 2020.

See the Legacy API Shutdown December 9 announcement for further details.


Legacy APIs

If you are using one of the legacy API endpoints, you will need to migrate to the new json-based APIs.

The new APIs provide more comprehensive search and fetch capabilities, see Web Services Overview.

Documentation for the new services and migration guides are available:

Data API tutorial
Search API tutorial
Data API migration guide
Search API migration guide