The 2D chemical structural formula editor integrated with tweet posting function (available at chemical.space/editor) is one of the easiest ways to share one's own idea of chemical structures on Twitter. Users can share their manually edited structural formula as a SMILES or Chemical Markup Language (CML) format. By using CML, users can include the information of coordinate and rotation of each object. This is a better way to share complex structures, whereas SMILES can only represent the molecular graph information, which has the advantage of the smallest data size. This editor has one more useful feature, in which users can send their manually drawn chemical structure to @retrosynthchan bot (shown in Case Study 1) by just clicking the RETROSYNTHESIZE button.