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Catsyn? 1,5:6,10-Dimethanooxepino[4,5-D]oxepin-2,4,7,9(1H,5H)-tetrone, tetrahydro- | CAS 4945-72-6?? ?? ??? ?????. ? ??? C12H10O6??, ???? 250.20g/mol??, ??? ????? NLT 98%???.