Extract data after a 16-char array

I have a list contained of:

msil_accessibility_b03f5f7f11d50a3a_4.0.9200.16384_none_f29a377bbde00aca
msil_addinprocess_b77a5c561934e089_4.0.9200.16384_none_bea48c47662966e7
msil_addinutil_b77a5c561934e089_4.0.9200.16384_none_46bb45b25afd8258
msil_c2wtshost_31bf3856ad364e35_6.2.9200.16384_none_173cedde0cb8cb1e
msil_comsvcconfig_b03f5f7f11d50a3a_4.0.9200.16384_none_9077d3f0ff7da8e9
msil_comsvcconfig_b03f5f7f11d50a3a_6.2.9200.16384_none_f6890c4e84728c09
msil_datasvcutil_b77a5c561934e089_4.0.9200.16384_none_a504ac19ddf53bdc
msil_dfsvc_b03f5f7f11d50a3a_4.0.9200.16384_none_0abca318b3e1bd26
msil_edmgen_b77a5c561934e089_4.0.9200.16384_none_f86a74fad440de36
msil_ehcir_31bf3856ad364e35_6.2.9200.16384_none_dd2db26d9d2d7e96

As you can see, the arrays have exactly 16 characters, all alphanumeric:

b03f5f7f11d50a3a
b77a5c561934e089
31bf3856ad364e35

What I want is to extract everything up to that piece of code. For example:

msil_accessibility_b03f5f7f11d50a3a
msil_addinprocess_b77a5c561934e089
msil_c2wtshost_31bf3856ad364e35

Thank you for your help

PS. How are you guys? Haven't been active around here since a long time.

¸Here, try this:

Formula:

=TRIM(LEFT(SUBSTITUTE(A1;"_";REPT(" ";255);3);100))

Replace ; with , if needed.