2H,6H,12H-Benzo[1,2-b:3,4-b':5,6-b'']tripyran-2,12-dione,10,11-dihydro-6,6,10,11-tetramethyl-4-propyl-, trans-;(?à)-12-Oxocalanolide A;12-Oxocalanolide A;151005-67-3;
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