Suggest a possible mechanism for the oxymercuration step of the reaction given below. Take into account the stereochemistry of the products formed.

Detailed mechanism of oxymercuration with electron flow arrows and intermediates.

Oxymercuration mechanism showing intermediates and final products with stereochemistry.

Oxymercuration reaction steps with electron movement and product formation.

Illustration of oxymercuration mechanism with detailed electron flow and product stereochemistry.