stop reading node name at Multiplicity in case the name got split ont…

…o multiple lines

rmgpy/data/kinetics/family.py

@@ -4522,8 +4522,26 @@ def extract_source_from_comments(self, reaction):
 
         # Check whether we're using the old rate rule templates or the new BM tree nodes
         if full_comment_string.find('for rate rule') < 0:  # New trees
-            rate_rule_string = full_comment_string.split("Estimated from node", 1)[1].strip()
-            node = rate_rule_string.split()[0].strip()  # cut off anything on the end
+
+            start_tag = 'Estimated from node '
+            end_tag = 'Multiplied by reaction path degeneracy'
+
+            start_loc = full_comment_string.find(start_tag)
+            end_loc = full_comment_string.find(end_tag)
+            if start_loc == -1:
+                raise ValueError('Could not find start of node in comments')
+            if end_loc == -1:
+                # check if the nodename is the last token
+                node_tokens = full_comment_string.split()
+                if node_tokens[-2] == 'node':
+                    end_loc = None
+                else:
+                    raise ValueError('Could not find end of node in comments')
+
+            node = full_comment_string[start_loc + len(start_tag): end_loc]
+            node = node.replace('\\n', '')
+            node = node.replace('# ', '')
+            node = node.replace(' ', '')
             rules = ''
             training_entries = ''
             template = ''