No it is missing the gtag. It should be:
{% assign fa_send_to = 'AW-123456789/abcdefghijlklmnopq' %}
{% comment %}DO NOT EDIT BELOW{% endcomment %}
{% if fa_google_coding %}{% assign fa_google_coding = true %}{%- else -%}{% assign fa_google_coding = false %}{%- endif -%}
{% assign fa_google_ids = fa_send_to | split: "/" %}
{% if fa_google_coding == false %}
{%- endif -%}
{% if first_time_accessed %}
{% endif %}