Speaking in theory here (never tried using acacia confusa yet), any typical dmt extraction should work. There may be some different impurities in acacia confusa in contrast with mimosa but i see no reason why, if its necessary at all, it cant be removed later on (through recrystallizing or re-a/b).
I wouldnt bother with defat and would do something like BLAB, but petrochem-based extractions should work fine too.
If you try it, dont forget to let us know how it goes! And do not throw anything away till you have your final yield, if dmt is there, you'll get it
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