501
ATOM  C1   C2   C3   C4   C5   C6   N10  C11  N12  C13
ATOM  N14  N15  N16  C17  C18  C19  N21  C22  C23  C26
ATOM  C29  C37 CL41  C42
CONNECT -  C1   C2  C3  C4  C5  C6  C1 +
CONNECT  C2   C42
CONNECT  C3   N10  C11  N12  C13  N14  N15  C11
CONNECT  C5  CL41
CONNECT  C13  N16  C17  C18  C19  N14
CONNECT  C17  C37
CONNECT  C19  N21  C22  C23  C26  C29