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Novel CCR2 antagonists with a novel 2 - aminooctahydrocyclopentalene - 3a - carboxamide scaffold were designed .
 Chemical: 2 - aminooctahydrocyclopentalene - 3a - carboxamide
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: 2 - aminooctahydrocyclopentalene - 3a - carboxamide