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Top: SPRR spectra of WY dipeptide calculated at ω1 resonant with ε1:Trp-Lb (left) and ε4:Tyr-La (right). Bottom: 1DSRR spectra calculated for a pre-resonant pulse (ω1 = 35500 cm−1) as pump and probe pulse resonant with ε1 (left) and ε4 (right). Pulses are shown in the inserts.
