Take a look at Frank's regex example http://network.ubotstudio.com/forum/index.php?/topic/7162-using-regex-to-catch-text-between-sections/?/topic/7162-using-regex-to-catch-text-between-sections/
navigate("https://www.flashback.org/t1045448", "Wait")
comment("Replace the line breaks before using Frank\'s regex example.")
set(#DocNoLineBreaks, $replace($document text, $new line, $nothing), "Global")
clear list(%quoted)
add list to list(%quoted, $find regular expression(#DocNoLineBreaks, "(?<=<div class=\"post-clamped-text\">).*?(?=</div>)"), "Delete", "Global")