Radial distribution of the torque, quantified by the fraction of the angular momentum transferred from the gas in one rotation–dL/L, estimated from the CO(3−2) de-projected map. The vertical dashed line at 6 pc radius delimitates the extent of the molecular torus, in this case, unresolved to match the resolution of the NIR image. The torque is negative inside the ≲100 pc nuclear spiral and in the spiral arm at ∼600 pc. Torques are positive at the ILR ring and in the filaments connecting the nuclear spiral and the ILR ring.