Existing thread about this (or I should say these) fare(s)
here
One fare has a 7 day min and is roughly $2300.
There is another fare with a 3 day min that is about $2700.
If you use something more advanced than Google flights you can easily avoid the MIA-GRU JJ angled seats. You can easily route this on AA metal or via SCL or JFK to get JJ/LA flat bed all the way.