where the reference conversion is the weighted average for functional groups in acrylic polymers, namely hydroxyl and carboxyl groups. The molecular weight analysis of the largest cluster (Figure ), second largest cluster (Figure ), and number of free chains (Figure ) aligns with characteristics of step-growth polymerization: (i) high molecular weight clusters form only at high conversions (Figure ), and (ii) oligomers are prevalent until near-completion (Figure ). The cluster evolution occurs in three stages. Initially, small clusters of two or three chains form, with cluster size increasing sooner as chain length and functionality rise: at 35%, 20%, and 10% conversion for S-6OH, M-6OH, and L-6OH systems, respectively. In the second stage, cluster size grows rapidly as smaller clusters merge. Finally, molecular weight plateaus as all clusters connect, and further reactions strengthen existing connections in the network rather than forming new clusters. To further validate our simulations, the gel point for each system was determined using several approaches as shown in Table (the methodologies are detailed in SI section S3.4). In our simulations, the gel point is identified as the conversion at which the largest cluster merges with the second-largest, which causes a sharp drop in the molecular weight of the second-largest cluster. The peak of this curve marks the gelation point (see Figure ). As prepolymer chain length increases, gelation occurs at lower conversions: 42%, 30%, and 20% for S-6OH, M-6OH, and L-6OH systems, respectively. The prepolymer functionality has a similar effect, although the chain length has a more pronounced impact. It is worth noting that Flory-Stockmayer and Miller-Macosko equations underestimate the gel point by neglecting the intramolecular reactions , leading to systematically lower theoretical values compared to our results (see Table ). The evolution of unreacted chains initially decreases rapidly (Figure ). As the reaction progresses, this rate slows until no free chains remain. In systems with longer prepolymers, free chains reach zero at lower conversions: 30% for L-6OH, 60% for M-6OH, and 80% for S-6OH systems. Similarly, the higher the prepolymer functionality, the greater the chances that an acrylic chain reacts, therefore there are fewer free chains at the same conversion.