+?repeats the group contents below at least once:
\s*any whitespace character, repeated any number of times
Non-Capturing Group(?:\"([^\"]*)\"|([^;]+)) 1st Alternative\"([^\"]*)\" \"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 ; (5910 / 738 / 3B16)
\s*any whitespace character, repeated any number of times
,?optionally matches the literal , (4410 / 548 / 2C16)