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Structural information on electronically excited neutral molecules can beindirectly retrieved, largely through pump-probe and rotational spectroscopymeasurements with the aid of calculations. Here, we demonstrate the directstructural retrieval of neutral carbonyl disulfide (CS$_2$) in the B$^1$B$_2$excited electronic state using laser-induced electron diffraction (LIED). Weunambiguously identify the ultrafast symmetric stretching and bending of thefield-dressed neutral CS$_2$ molecule with combined picometer and attosecondresolution using intrapulse pump-probe excitation and measurement. We invokethe Renner-Teller effect to populate the B$^1$B$_2$ excited state in neutralCS$_2$, leading to bending and stretching of the molecule. Our resultsdemonstrate the sensitivity of LIED in retrieving the geometric structure ofCS$_2$, which is known to appear as a two-center scatterer.

Imaging the Renner-Teller effect using laser-induced electron diffraction