Sending email using EmailMultiAlternatives where from_email contains comma

Hi all

I'm using EmailMultiAlternatives to send email. I defined from_email as

Mike <mike@example.com> 

and it works great. But, if I try to send with

Mike, CEO <mike@example.com>

I get an error that Mike is not valid email. How to correctly send email which contains comma in sender?

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