13921
A combination of NMR analyses , transient absorption spectroscopy , and fluorescence measurements in water and acetonitrile reveal that complex 1 ( 2 + ) must be hydrated at the quinone functionality , giving [ ( phen ) ( 2 ) Ru ( phenH ( 2 ) O ) ] ( 2 + ) ( 1H ( 2 ) O ( 2 + ) , where phenH ( 2 ) O = 1 , 10 - phenanthroline - 6 - one - 5 - diol ) , in order to access a long - lived ( 3 ) MLCT ( hydrate ) state ( tau ~ 360 ns in H ( 2 ) O ) which is responsible for DNA cleavage .
 Chemical: acetonitrile; Chemical: quinone; Chemical: [ ( phen ) ( 2 ) Ru ( phenH ( 2 ) O ) ] ( 2 + ); Chemical: 1H ( 2 ) O ( 2 + ); Chemical: phenH ( 2 ) O; Chemical: 1 , 10 - phenanthroline - 6 - one - 5 - diol; Chemical: hydrate; Chemical: H ( 2 ) O
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: acetonitrile; Chemical: quinone; Chemical: [ ( phen ) ( 2 ) Ru ( phenH ( 2 ) O ) ] ( 2 + ); Chemical: 1H ( 2 ) O ( 2 + ); Chemical: phenH ( 2 ) O; Chemical: 1 , 10 - phenanthroline - 6 - one - 5 - diol; Chemical: hydrate; Chemical: H ( 2 ) O