Nice find. Thanks OP! ^
Bookable on LH.com and easily searchable via Google or ITA. Fare is non-refundable but changeable for $450 + fare diff.
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General notes
MIDWEEK BUSINESS CLASS ADVANCE PURCHASE P FARES APPLIES FOR ROUND TRIP FARES FOR ADULT
Category 2: Day/Time restrictions
PERMITTED SUN THROUGH THU ON EACH TRANSATLANTIC SECTOR.
Category 3: Seasonal restrictions
PERMITTED 01JUN 17 THROUGH 31AUG 17 FOR EACH TRANSATLANTIC SECTOR.
Category 5: Advanced reservation/ticketing restrictions
RESERVATIONS ARE REQUIRED FOR ALL SECTORS.
WAITLIST NOT PERMITTED.
TICKETING MUST BE COMPLETED WITHIN 72 HOURS AFTER RESERVATIONS ARE MADE.
Category 7: Maximum stay requirements
TRAVEL FROM LAST STOPOVER MUST COMMENCE NO LATER THAN 12 MONTHS AFTER DEPARTURE FROM FARE ORIGIN.
Category 8: Stopover restrictions
STOPOVERS NOT PERMITTED ON THE FARE COMPONENT.
Category 15: Sales restrictions
TICKETS MUST BE ISSUED ON/BEFORE 30APR 17.