Who are the people on the photo?

Door: Silvia Carolina Grünebaum

Berlin 1933

*Private Collection*
Door: Redactie Joods Monument
Met: Moritz Cohen, Klara Karoline Weijel-Cohen, Margarete Minchen Grünebaum-Cohen

Alle rechten voorbehouden

On the back of the photo is written Berlin 1933. Some people are known. Two are unknown and one is douptfull.
Who can help me identify the unknown persons.

To the left is Moritz Cohen. Beside him is most likely Philip van Gelder. With the white dress is Klara Karoline Weijel-Cohen. The lady third from the right is unknown. The second from the right is my mother Grete Grünebaum-Cohen. The boy is also unknown.