SFTP sender adapter filename in regular expression

Hi All,

I have filename with spaces such as FX Month End 1001.txt.notes.txt and FX Month End 1001.txt in same folder

I need to exclude the files with notes.txt i have REGEX as ^FX((?!\.notes.txt$)[\w.])+$

Its working fine when we have file name with under score eg: FX_Month_End_1001.txt.

But not working when we have spaces.Please help.