17674
The good tumor uptake and favorable tumor - to - nontarget - organs ratios of ( 99m ) Tc ( CO ) 3 - Pz ( 3 ) - beta AlaNleCycMSH ( hex ) and ( 99m ) Tc ( CO ) 3 - Pz ( 4 ) - beta AlaNleCycMSH ( hex ) highlights the potential of both compounds as melanoma imaging agents .
 Chemical: ( 99m ) Tc ( CO ) 3 - Pz ( 3 ) - beta AlaNleCycMSH ( hex ); Chemical: ( 99m ) Tc ( CO ) 3 - Pz ( 4 ) - beta AlaNleCycMSH ( hex )
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: ( 99m ) Tc ( CO ) 3 - Pz ( 3 ) - beta AlaNleCycMSH ( hex ); Chemical: ( 99m ) Tc ( CO ) 3 - Pz ( 4 ) - beta AlaNleCycMSH ( hex )