Fix shared lib windows builds.

Change-Id: Id0550a43c3407e3768f6d252d2ca996c7e283040

Chemistry/vtkMoleculeAlgorithm.h

@@ -35,7 +35,7 @@
 class vtkDataSet;
 class vtkMolecule;
 
-class VTK_FILTERING_EXPORT vtkMoleculeAlgorithm : public vtkAlgorithm
+class VTK_CHEMISTRY_EXPORT vtkMoleculeAlgorithm : public vtkAlgorithm
 {
 public:
   static vtkMoleculeAlgorithm *New();