[ molecule ]
HEP 

[ martini ]
C1 C2 

[ mapping ]
gromos

[ atoms ]
    1   C101  C1  
    2   C102  C1  C1 C1 C1 C1 C2
    3   C103  C1  C1 C2
    4   C104  C1  C2
    5   C105  C2  C2 C1   
    6   C106  C2  C2 C2 C2 C2 C1
    7   C107  C2