chem changed to chemical

pmc_open_access_xml.py

@@ -72,7 +72,7 @@ _SUBSETS = {
 _BASELINE_DATE = "2022-09-03"
 
 REFS_KEYS     = ["pmid_ref", "unknown_pub_ref", "figure_ref", "table_ref", "formula_ref", "box_ref", "code_ref",
-                 "quote_ref", "chem_ref", "supplementary_ref", "footnote_ref", "graphic_ref", "media_ref"]
+                 "quote_ref", "chemical_ref", "supplementary_ref", "footnote_ref", "graphic_ref", "media_ref"]
 CONTENT_KEYS  = ["introduction", "methods", "results", "discussion", "conclusion",
                  "front", "body", "back", "figure", "table", "formula", "box",
                  "code", "quote", "chemical", "supplementary", "footnote"]
@@ -99,7 +99,7 @@ TAG_DIC = {"fig":("FIG","figure_ref"),             "table-wrap":("TAB","table_re
            "media":("MEDIA","media_ref"),          "inline-media":("MEDIA","media_ref"),
            "disp-formula":("FORMU","formula_ref"), "inline-formula":("FORMU","formula_ref"),
            "table-wrap-foot":("FOOTN","footnote_ref"), "fn-group":("FOOTN","footnote_ref"),
-           "code":("CODE","code_ref"),                 "chem-struct-wrap":("CHEM","chem_ref"),
+           "code":("CODE","code_ref"),                 "chem-struct-wrap":("CHEM","chemical_ref"),
            "disp-quote":("QUOTE","quote_ref"),         "speech":("QUOTE","quote_ref"),
            "supplementary-material":("SUPPL","supplementary_ref"),
            "inline-supplementary-material":("SUPPL","supplementary_ref")}