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Looks kinda like a oil stain or some kind of residue.
Wash with Dawn dish liquid(this will strip anything off of the paint such as polish,wax.
(See if this has removed your stains,if so just wax or polish and wax) If not move to next stage.
Get a clay bar kit (clay bar,spray lube/quick detailer,microfiber cloth),Mequiars is fine and have at it.
Wash again with regular car wash to remove any clay bar/spray residue.
Rinse well. and dry( I like to use a leaf blower)
At this point, if the stain is still there seek professional help.
Polish and wax as you have no protection what so ever at this point.
Best of luck!
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