- Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. - Separate structures with + signs from the drop-down menu. Draw two constitutional isomers that share the molecular formula C4H10. Your structures will have the same molecular formula but will have different connectivities. - Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. - Separate structures with + signs from the drop-down menu