Esttab and reg3

Hi everyone,

I've looked online a little bit, but cannot find anything too definitive on the following matter. My goal is to esttab results from reg3 to be in a nicely presented table, just like I normally use via esttab for tex. However, I'm not sure how to call equation estimates from different lines in reg3. If you just use the normal esttab command, it will print the coefficients from the first equation in the simultaneous equations. How do you selectively choose the coefficients from, say, the second equation?

Thank you!