python正则表达式出现问题

代码如下

import re
html_str = '1.07x10-11 [cm3/molecule s] e-33.09 [±6.95 kJ/mole]/RT'
local = re.findall(r'e(.*) [±', html_str)
print(local)

想输出-33.09这个值但一直出现如下错误

Traceback (most recent call last):
  File "C:/Users/Administrator/Desktop/123.py", line 3, in <module>
    local = re.findall(r'e(.*) [±', html_str)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python38-32\lib\re.py", line 241, in findall
    return _compile(pattern, flags).findall(string)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python38-32\lib\re.py", line 304, in _compile
    p = sre_compile.compile(pattern, flags)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python38-32\lib\sre_compile.py", line 764, in compile
    p = sre_parse.parse(p, flags)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python38-32\lib\sre_parse.py", line 948, in parse
    p = _parse_sub(source, state, flags & SRE_FLAG_VERBOSE, 0)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python38-32\lib\sre_parse.py", line 443, in _parse_sub
    itemsappend(_parse(source, state, verbose, nested + 1,
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python38-32\lib\sre_parse.py", line 549, in _parse
    raise source.error("unterminated character set",
re.error: unterminated character set at position 6

新手，希望大家解答！！！

https://blog.csdn.net/yj1556492839/article/details/79543359