Please solve the programming task below using a self-contained code snippet in a markdown code block.

You are given a string s that consists of lower case English letters and brackets.
Reverse the strings in each pair of matching parentheses, starting from the innermost one.
Your result should not contain any brackets.
 
Please complete the following python code precisely:
```python
class Solution:
    def reverseParentheses(self, s: str) -> str:
```