add IUPAC

[alan-jarmusch]

it's really nice.

[alan-jarmusch]

(R)-4-((3R,5S,7R,8R,9S,10S,12S,13R,14S,17R)-3,7,12-Trihydroxy-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl)pentanoic acid

[mwang87]

We have several options, can use cactus:

https://cactus.nci.nih.gov/chemical/structure

or use OPSIN locally:

https://opsin.ch.cam.ac.uk/

[jvansan]

Given that cactus is already used for an InChIKey lookup, adding a name lookup would make sense to me. This difficult part would be getting a name from cactus because it will just return a list of names for a given identifier.

For example:
https://cactus.nci.nih.gov/chemical/structure/InChIKey=LFQSCWFLJHTTHZ-UHFFFAOYSA-N/names

[jvansan]

Here's a basic implementation of the lookup: https://github.com/mwang87/ChemicalStructureWebService/tree/name_lookup

The tests run fine, but I haven't added any new cases.