Reply To: Chemical Molecular structure Home › Forums › Nemeth Code for Math and Science › Chemical Molecular structure › Reply To: Chemical Molecular structure August 21, 2013 at 10:29 am #22175 dworthingParticipant I have asked someone who knows more about chemistry than I do to look at your question. As far as order of lines, I often move things like you did to avoid them getting lost. I don't believe a tn is required.