Retrieve only the main content of academic articles using rscopus package

Question

I would like to retrieve the main content only of academic articles using the rscopus package. However, following the codes below, I will get messy information (like headers, table of contents, table of figures) before the main part of papers start. How can I solve the problem?

for (id in ID_list){
x = article_retrieval(id, identifier = "pii",
verbose = FALSE, view = "FULL")
gen = x$content$`full-text-retrieval-response`
ot = gen$originalText
data_list <- append(data_list, ot)
}