special characters user name issue

Error : Username prompt (no username provided)

open ftp://prod/user1@ftp.net:#1tset@prod.ftp.com:21

user name : prod/user1@ftp.net
password : #1tset
server : prod.ftp.com

Please read documentation:
https://winscp.net/eng/docs/session_url

If that does not help, come back.