Can I buy grt on Coinbase?

Excuse me, I'm interested in purchasing GRT tokens and I'm wondering if Coinbase supports the purchase of GRT? As a cryptocurrency investor, I'm always looking to expand my portfolio and GRT seems like a promising addition. Could you please clarify if Coinbase allows for the direct purchase of GRT, or if there are any alternative methods or platforms I should consider? Thank you for your time and assistance.