Now otl, Philip IV had only two surviving children from his marriage to Elisabeth of France: Balthasar Carlos who died in 1646, and Maria Theresa, who married Louis XIV. But say, Philip IV's daughter Maria Anna Antonia born 1636 survived, keeping certain butterflies to a minimum, when it comes time for negotiating a peace deal, between Spain and France, would it be Maria Anna who is married to Louis XIV instead of Maria Theresa, and would Maria Theresa then perhaps be scheduled to marry Leopold? If so, how does this influence the Spanish succession, particularly if Carlos II is the only surviving son of Felipe IV of Spain and especially if Maria Anna is forced to renounce her succession rights as her sister did otl?