As with the linear alkanes, this error is systematically reduced (though not eliminated) as T CutPNO is tightened. For the largest system considered, (C 96 H 24 ) 2 , the DLPNO error can exceed 20 kcal/mol. For all of these systems, we find that tight-CCSD(T) thresholds afford much smaller DLPNO errors as compared to loose-MP2