PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 32048865-1 2020 The problem of computing the rooted subtree prune and regraft (rSPR) distance of two phylogenetic trees is computationally hard and so is the problem of computing the hybridization number of two phylogenetic trees (denoted by Hybridization Number Computation [HNC]). 1-hydroxy-11-norcadinan-5-en-4-one 260-263 sepiapterin reductase Rattus norvegicus 63-67