If all of the nematocyst on a jellyfish were filled with posion, what is the total amount of poison that it would contain

Jellyfish are found in every ocean of the world. They are even found in some freshwater lakes and ponds.[6] Jellyfish range from the size of a thimble or the eraser tip of pencil to approximately eight feet in diameter with tentacles that reach 200 feet. That is as long as two blue whales.[1] Each jellyfish tentacle is armed with thousands of cells called cnidoblasts. Inside the cnidoblasts are nematocysts, each of which contains a coiled stinging thread. When a fish or other object becomes tangled in the tentacles, the pressure inside the nematocysts causes the venomous threads to uncoil like a spring-loaded harpoon