How to make .stl mesh surface file to a solid

Hello, this is Heon.

I'm trying to make .ma(Autodesk Maya) file to a solid file in Solidworks again.

Last time, Doug let me know how to solve this problem that there's a trim needed.

And I appreciate it.

then tried to "knit surface" this time too.

This time, it seems like every faces are fit, so I couldn't find where to trim.

Now I don't know what to do more than this.

What can I do next?

Attached both file, 'stl' and 'sldprt'

Best regards.

SolidworksParts And Features