sˈɪmɪlɚli,  ɪz ðə mˈæksɪməm wˈɜːst ˈɛnɚdʒi pˈɑːsᵻbəl bᵻtwˌiːn ɹˈoʊɾeɪmɚɹ ʌv sˈaɪdtʃeɪn ænd ˌɛni ɹˈoʊɾeɪmɚɹ ˈɛks ʌv sˈaɪd tʃˈeɪn .
Similarly,  is the maximum (worst) energy possible between rotamer  of sidechain  and any rotamer X of side chain .