\s*any whitespace character, repeated any number of times
Non-Capturing Group(?:"([^"]*)"|([^,]+)) "the literal " (3410 / 428 / 2216)
Negated Character Class[^"]* *matches any number of characters outside the set below:
"the literal " (3410 / 428 / 2216)
"the literal " (3410 / 428 / 2216)
Negated Character Class[^,]+ +matches at least one character outside the set below:
,the literal , (4410 / 548 / 2C16)
\s*any whitespace character, repeated any number of times
,?optionally matches the literal , (4410 / 548 / 2C16)
g modifier: global. Finds all matches instead of stopping after the first