Thank you very much guys, I finally got it:
Here it is:
grep '^ *Function[0-9]\{1,\} *[0-9]\{6\}\.[0-9]\{2\} *[0-9]\{7\}\.[0-9]\{2\} *[0-9]\{1,4\}\.[0-9]\{4\} *[0-9]\{4\}\.[0-9]\{4\} *$' file
Now my challenge is finding a way to validate that the fields 4 and 5 are always increasing.
I really...