re='[[:space:]]([^[:space:]]+)[[:space:]]+Infra'
while IFS= read -r line; do
[[ $line =~ $re ]] && echo "${BASH_REMATCH[1]}"
done
cmU9J1tbOnNwYWNlOl1dKFteWzpzcGFjZTpdXSspW1s6c3BhY2U6XV0rSW5mcmEnCndoaWxlIElGUz0gcmVhZCAtciBsaW5lOyBkbwogIFtbICRsaW5lID1+ICRyZSBdXSAmJiBlY2hvICIke0JBU0hfUkVNQVRDSFsxXX0iCmRvbmU=
ICAgICAgICBhd2Vzb21lYml0Y2hlc3oyLjAgIEluZnJhICA2ICAgICA1NCBNYml0L3MgICA3OSAgICAgIOKWguKWhOKWhl8gIFdQQTIgICAgICAgIAoqICAgICAgIEJvdXJib25ob3VzZSAgICAgICAgSW5mcmEgIDYgICAgIDEzMCBNYml0L3MgIDcwICAgICAg4paC4paE4paGXyAgV1BBMiAgICAgICAgCiAgICAgICAgLS0gICAgICAgICAgICAgICAgICBJbmZyYSAgNiAgICAgMTMwIE1iaXQvcyAgMzQgICAgICDiloLiloRfXyAgV1BBMiA4MDIuMVggCg==
awesomebitchesz2.0 Infra 6 54 Mbit/s 79 ▂▄▆_ WPA2
* Bourbonhouse Infra 6 130 Mbit/s 70 ▂▄▆_ WPA2
-- Infra 6 130 Mbit/s 34 ▂▄__ WPA2 802.1X