Representing the complete network of CRN-E in a single yet meaningful Figure is not doable given the large number of reactions and compounds (Table ). Here, we illustrate the initial steps with the involved compounds, flasks, and transition states (Figures and) leading to the ozonide and the reactions of the ozonolysis reaction path (Figures and). A complete representation of the CRNs with all compounds and reactions is available in the HTML files generated with the browser-based visualization module VizChemoton. Note that the identification of a compound a priori does not imply relevance. The latter is requires the evaluation of the complete reaction network for reaction mechanisms and kinetics as is done below. starts by pushing together ozone and ethene to form flask A1, which was already found by Wheeler et al. as vdW complex. This pre-reactant complex forms three different compounds through three distinct transition states. The three-dimensional structures of the transition states are depicted in the orange boxes of Figure . The exploration procedure identified the most critical compound, the ozonide, C3, through reaction R1, in good agreement with experiments and previous theoretical investigations. Figure 3 also depicts a second reaction, R2, which leads to the formation of the known secondary zwitterion in the Criegee mechanism (2 in Figure ). Reaction, R3 shows the formation of the 1ethenyltrioxidane, C5, which has not been not been proposed for ozonolysis of ethene.