This option allows you to search by several physical and chemical parameters as eg. cLogP and structure.
Just enter the value in the corresponding field. Only products that fulfill all the conditions will be displayed. For molecular formula you may enter range like C10-14F1-3N2O0
Molecular formula  equals 
Molecular weight  between   and 
cLogP between   and 
H bond acceptors  between   and 
H bond donors  between   and 
Rotatable bonds  between   and 
Structure  contains