fix for parsing cif oper_expression of the form 'P(1-46)'
fix for parsing cif oper_expression of the form 'P(1-46)'

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