Drawing Resonance Structures

Hello, 

 

I'm having trouble drawing resonance structures on your platform. I do not know if it's because I haven't added the parentheses in between my two resonance contributors (if so, I cannot find them) or for any other reason. Any help would be greatly appreciated. Here is an image, I do not understand why it is being marked wrong:

Micaela

Dear Miceala,

You can insert parenteses, square brackets, braces and chevrons into your drawings by using the icon located by default in the 'Tools' toolbar.

Additional resonance structures can be drawn considering the C=C double bond.

 

Best wishes,

Nikolett Mihala