4301
Next , Molecular Field Topology Analysis ( MFTA ) models were built , considering atomic descriptors , e . g . , effective charge , van der Waals radius of environment , and group lipophilicity .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None