What is the most likely mechanism for the reaction below? 
Definitions:
Negation
A logical operation that reverses the truth value of a proposition.
Disjunction
A logical operation expressing the condition of having at least one of two statements be true; represented by "or."
Disjunctions
Logical operations that result in truth if at least one of the operands is true.
Conditionals
Statements that express a hypothesis and its conclusion, commonly structured in "if...then..." format.
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