Can you buy Optimism on Coinbase?

Can you actually purchase Optimism tokens on the Coinbase platform? I've been hearing a lot about this cryptocurrency lately and I'm curious if it's available for trading on one of the most popular exchanges. Given Coinbase's extensive list of supported cryptocurrencies, I'm hopeful that Optimism might be among them. However, I'd like to confirm this information before proceeding with any purchase. So, is it possible to buy Optimism on Coinbase? If not, where else can I look to acquire some of these tokens?