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#!/usr/bin/perl ... push @{ $solvent_face{ $1 }{ $3 } }, $2 while /\b (F\S+) \h+ ([-\d.]+) (?=.*? (\S+) \h+ 0.00000000 )/gsx; use Data::Dump 'dd'; dd \%solvent_face;
{ "acetonitrile" => { ... "h2o_F11-1" => 29.58963453, "h2o_F111" => 30.24092207, }