Channel maps of the ²⁸Si¹⁸O v = 0 J = 6–5 line emission. The contours are at 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44 and 48 times the rms noise in the peak line channel (0.07 Jy beam^-1). Every channel is 2.5 km s^-1 wide and the central LSR velocity is indicated in the lower right corner of each box. The emission from the ²⁸Si¹⁸O isotopologue is mostly compact and peaks on Source I (pink star), but displays also a low-brightness elongated structure in the northeast-southwest direction, indicating that the ²⁸Si¹⁸O isotopologue traces the same outflow structures as the ²⁸SiO v = 0 and ²⁹SiO v = 0 lines. The diffuse and extended emission at larger velocities mostly originates from the hot core, south of Source I, and may be attributed to CH₃CH₂CN. The ALMA synthesized beam is indicated as a white ellipse in the lower left panel.