Separate chords within an extended chord rename

TID(s):

Controller: 0.815s

Template: 0.035s

Cost: br=1.0, cc=1.179, ch=0.0, cm=0.0, cm+h=0.0, cr=0.0, cs=37.0, cw=25.0, dr=20415.0, dt=1.645, dw=0.0, gqr=0.0, in=16651.0, ir=1345.0, iw=0.0, lh=0.0, lm=1.0, lr=1.0, mcs=0.012, mcu=0.438, mr=25.0, nivcsw=465.0, nreqs=43.0, nvcsw=117.0, pf=0.0, pr=0.0, stime=0.032, te=0.143, tf=0.306, tg=0.261, tm=0.716, tr=0.126, ts=0.0, tu=0.108, utime=1.147, va=56324.0