The user and password are part of the mount-options, which is a comma separated list. You're missing some comma's.
A few notes aside.
Next time also show us the error message that you got. It makes it easier to diagnose the problem.
I hope you didn't show us the real username and password for the nas box. That seems to be a very bad habit, I've been told.
Normally you would only name the host-machine and the share name as the mount source. Like this
//sirius/samba /data/samba cifs cred=/etc/cred.gdj 0 0
As you see I use a credentials file to store the user/password information and which is only accessible by root.