of which; alternative to inanimate sense of “whose”

listen to the pronunciation of of which; alternative to inanimate sense of “whose”
İngilizce - İngilizce
which's

Do you happen to know if - gosh, I've forgotten his name - from the zoo film unit is still operating at that little film studio which's name I've also forgot?.

of which; alternative to inanimate sense of “whose”