7 Dec
2019
7 Dec
'19
1:21 p.m.
Hello Elaine. Has there been any development of this problem since the 2007 post? I’m trying to duplicate a small group in a large molecule and use the copy to substitute it an existing group of very similar size in the same molecule. Best wishes Simon Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10