Zn ch3coo

Zn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3coo
Zn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3coo
Zn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3cooZn ch3coo