mmtf parser, assign hetFlag based on chemCompType
mmtf parser, assign hetFlag based on chemCompType

arose/ngl,fredludlow/ngl,arose/ngl,arose/ngl,fredludlow/ngl,j0kaso/ngl,arose/ngl,fredludlow/ngl,j0kaso/ngl,fredludlow/ngl,j0kaso/ngl