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Activity within the social behavior neural network is modulated by the neuropeptide arginine vasotocin ( AVT ) and its mammalian homologue arginine vasopressin ( AVP ) .
 Chemical: arginine vasotocin; Chemical: AVT; Chemical: arginine vasopressin; Chemical: AVP
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: arginine vasotocin; Chemical: AVT; Chemical: arginine vasopressin; Chemical: AVP