Sometimes, you will find it difficult to add new fragments to your molecule file, for example, if you already have structures cleaned in 3D.
In this case, follow the steps below to add a new structure or fragment to the canvas.
Navigate to the Insert menu and click New Structure. A separate canvas opens.
Draw the structure in the new window. You can perform a 3D clean on the new structure to match to your original 3D molecule.
Click the Transfer button.