ovftool always get unexpected option error

Hi, Expert,

I am using ovftool on my windows 10 machine , the version is 4.3.0:

PS C:\Program Files\VMware\VMware OVF Tool> .\ovftool.exe  --version

VMware ovftool 4.3.0 (build-7948156)

But everytime I am trying to deploy an ova I would get error unexpected option error:

PS C:\Program Files\VMware\VMware OVF Tool> .\ovftool.exe   -ds=datastore2(2) -n=router-vm "C:\Prog

ram Files\VMware\VMware OVF Tool\myrouter.ova" "vi://root:testpw@100.1.1.1"

Error: Unexpected option: C:\Program Files\VMware\VMware OVF Tool\csr1000v-ucmk9.16.12.1d.ova

Completed with errors

Any solution for this?