3-(Diethylamino)-7-methylspiro(11H-(1)benzothieno(3,2-b)(1)benzopyran-11,1'(3'H)-isobenzofuran)-3'-one;3-diethylamino-7-methyl-spiro[benzothiopheno[3,2-b]chromene-11,3'-isobenzofuran]-1'-one
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