the AHD is very consistent with the 'strophe' words, putting the accent on the second syllable [examples]; but SYS tro phe

Could the rule that the antepenultimate syllable [if there is one] is accented, in which case "systrophe" would not be an exception? Among the words tsuwm cites, only or NITH o tro phe would be an exception -- but is that the correct pronunciation of that word? For that matter, is there any such word? I am unable to find it.