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

Given a string s of '(' , ')' and lowercase English characters.
Your task is to remove the minimum number of parentheses ( '(' or ')', in any positions ) so that the resulting parentheses string is valid and return any valid string.
Formally, a parentheses string is valid if and only if:

It is the empty string, contains only lowercase characters, or
It can be written as AB (A concatenated with B), where A and B are valid strings, or
It can be written as (A), where A is a valid string.

 
Please complete the following python code precisely:
```python
class Solution:
    def minRemoveToMakeValid(self, s: str) -> str:
```