画结构式，生成 3D 模型Draw a structure, get a 3D model
在左侧画出骨架式，右侧自动生成 3D 构象，并计算分子式、分子量等性质。全部在浏览器中完成，不上传任何数据。Draw a skeletal formula on the left; the right side generates a 3D conformer and computes the formula, molar mass and other properties. Everything runs in your browser; nothing is uploaded.
结构编辑器Structure editor
点空白处或原子画键，拖动可定方向；点键切换单、双、三键；鼠标停在原子上按 N、O、S、L（Cl）、B（Br）等键改元素；⌘Z 撤销。Click empty space or an atom to add a bond, drag to aim it; click a bond to cycle single, double and triple; hover an atom and press N, O, S, L (Cl), B (Br) to change the element; ⌘Z to undo.