RESIDUE   LDB     12
CONECT      N01    3 C01  C02  H1  
CONECT      N02    3 C01  C04  H2  
CONECT      C01    3 N01  N02  O01 
CONECT      C02    3 N01  C03  S01 
CONECT      C03    3 C02  C04  H3  
CONECT      C04    3 N02  C03  H4  
CONECT      O01    1 C01 
CONECT      S01    1 C02 
CONECT      H1     1 N01 
CONECT      H2     1 N02 
CONECT      H3     1 C03 
CONECT      H4     1 C04 
END   
HET    LDB             12
HETSYN     LDB 4-sulfanylidene-1~{H}-pyrimidin-2-one
HETNAM     LDB 4-Thiouracil
FORMUL      LDB    C4 H4 N2 O1 S1