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Energy differences between frozen core and full core for MP4/daug-cc-pVDZ

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  Energy (hartrees)
frozen core -1590.7061540
correlated core -1590.7370242
difference -0.0308702
  Energy (hartrees)
frozen core -1590.7638790
correlated core -1590.7944513
difference -0.0305723
  Energy (hartrees)
frozen core -1590.7638789
correlated core -1590.7944512
difference -0.0305723