Web version can not use F, Cl,
Br, I.
Web version can not estimate Aromatics.
Change atom type or delete atom, mouse down and up at the same
atom.
Cis-, Trans- compounds return average
of both.
You need not write Hydrogen atom.
If you can not see this cyan panel, your system can not run JAVA applet. But actually, my JAVA applet is very old. So some OS with JRE version can not run this applet. Please give up if it not working.