C IV, Si IV and Lyman series absorptions of the GRB 191004B host galaxy identified in the VLT/X-shooter afterglow spectrum. The gray regions correspond to the uncertainty on the flux and the red line to the best-fit model, obtained using three components. Zero corresponds to the reddest component at z = 3.5055 named C1, C2, and C3 are the two other components detected at −105 and −180 km s⁻¹, respectively.