+repeats the group contents below at least once:
\s*any whitespace character, repeated any number of times
\{the literal { (12310 / 1738 / 7B16)
Negated Character Class[^\{\}]+ +matches at least one character outside the set below:
\{the literal { (12310 / 1738 / 7B16)
\}the literal } (12510 / 1758 / 7D16)
\}the literal } (12510 / 1758 / 7D16)
\s*any whitespace character, repeated any number of times