WSK
ATOM  C0   N0   O0   C1   N1   C2   C3   C4   C5   C6 
ATOM  C7   C8   C9   C10  C11  C12  C13  C14  C15  C16
ATOM BR1  BR2 
CONNECT -  C0   C1  C2  C3  N0  C7  C6  C4  C3 +
CONNECT  C0   C5  C4
CONNECT  C0  BR2
CONNECT  N0   C12  C13  O0
CONNECT  N1   C14  C13
CONNECT  N1   C15
CONNECT  N1   C16
CONNECT  C6   C11  C10  C9  C8  C7
CONNECT  C10 BR1