19832
Additionally , a third compound that appears at pH between 3 . 5 and 4 , [ Sc3 ( 3 , 5 - DSB ) ( mu - OH ) 6 ( H2O ) ] and a fourth , [ Sc ( 3 , 5 - DSB ) ( Phen ) ( H2O ) ] ( H2O ) , in whose formula neither OH groups nor H3O2 ( - ) anions appear , are reported for comparative purposes .
 Chemical: [ Sc3 ( 3 , 5 - DSB ) ( mu - OH ) 6 ( H2O ) ]; Chemical: [ Sc ( 3 , 5 - DSB ) ( Phen ) ( H2O ) ] ( H2O ); Chemical: OH; Chemical: H3O2 ( - )
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: [ Sc3 ( 3 , 5 - DSB ) ( mu - OH ) 6 ( H2O ) ]; Chemical: [ Sc ( 3 , 5 - DSB ) ( Phen ) ( H2O ) ] ( H2O ); Chemical: OH; Chemical: H3O2 ( - )