Naphtho[2',1':5,6]phenanthro[3,4-b]oxirene-9,10-diol,9,10,10a,11a-tetrahydro-, (9a,10b,10ab,11ab)-(?à)-;Naphtho[2',1':5,6]phenanthro[3,4-b]oxirene-9,10-diol, 9,10,10a,11a-tetrahydro-,(9a,10b,10ab,11ab)-
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