obsolete N(1),N(12)-diacetylspermine:oxygen oxidoreductase (3-acetamidopropanal-forming) activity (obsolete GO:0052899)
OBSOLETE. Catalysis of the reaction: H2O + N(1),N(12)-diacetylspermine + O2 = 3-acetamidopropanal + H2O2 + N(1)-acetylspermidine.