I have a bunch of files that I have to process on a Linux machine. The files look like this: 
```
2009-08-18T034353_DR1_4N-NAC_123456_1234_band1.ntf 
2009-08-18T034353_DR1_4N-NAC_123456_1234_browse.jpg 
2009-08-18T034353_DR1_4N-NAC_123456_1234_band2.ntf 
2009-08-18T034353_DR1_4N-NAC_123456_1234_license.txt 
2009-08-18T034353_DR1_4N-NAC_123456_1234_metadata.xml 
2009-08-18T034353_DR1_4N-NAC_123456_1234_readme.txt 
2009-08-18T034353_DR1_4N-NAC_123456_1234_udm.tif
```
I want to delete this part: `-NAC_123456_1234` where the first part can consist of alphanumeric characters and the number parts only of numeric characters. 

I tried a rename command but couldn't get it to work. I thought of something like: 

```
rename '/-[a-zA-Z]+_[0-9]+_[0-9]+//' *.*
```

Can someone help me with what I am missing? 

My rename version is: 

```
rename from util-linux 2.23.2
```