More cells calculated as only one cell

Hi everybody. I am new to cell profiler and I don`t know if I post in the right place my question. I want to count cells and to have them also in an excel file. I tried with one picture but some of the cells he treated as only one, because they are so close and the intensity is similar. How can I solve this problem?
I attach here the original and processed images.

Thank you very much for your kind help. Iolanda