#3251 - adding missing lines

packages/ketcher-polymer-editor-react/src/components/monomerLibrary/RnaBuilder/RnaEditor/RnaEditorExpanded/RnaEditorExpanded.tsx

@@ -1,3 +1,19 @@
+/****************************************************************************
+ * Copyright 2021 EPAM Systems
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ ***************************************************************************/
+
 import { MonomerGroups } from 'src/constants';
 import { GroupBlock } from './GroupBlock';
 import {