Reqular expression for formula which contains number, alphabets,expressions and brackets : I am trying to write a regular expression for the formula for the following examples.
 `1. C=A+B  => Output {A, +, B} 
 2. D= C+50 => Output{C, +, 50}
 3. E = (A+B)*C -100 => Output{(, A, +, B, ), *, C, -, 100}`

Please help me to create a regular expression. 
Thanks in advance.