1. Support the molecular structure, chemical reactions, biological sequence biopolymer
2. Support stereochemistry
3. Support Polymer Chemistry
4. Read Molfile, Rxnfile, SMILES, SMARTS, XML, SDF, ChemDraw, ISIS / Draw
5. Conversion name (IUPAC, CAS, common name, etc.) into the chemical structure

Button C, N, O, P, S, F, I, H corresponding to the atom. L key corresponding Cl, B corresponds to Br.
For example, draw and R-type structure in the retrieval result will be R-type, S-type, and racemic mixtures thereof are displayed.