23406
The synthesis of racemic tetrahydrocurcumin - ( THC - ) , tetrahydrodemethoxycurcumin - ( THDC - ) and tetrahydrobisdemethoxycurcumin - ( THBDC - ) dihydropyrimidinone ( DHPM ) analogues was achieved by utilizing the multi - component Biginelli reaction in the presence of copper sulphate as a catalyst .
 Chemical: tetrahydrocurcumin; Chemical: THC; Chemical: tetrahydrodemethoxycurcumin; Chemical: THDC; Chemical: tetrahydrobisdemethoxycurcumin; Chemical: THBDC; Chemical: dihydropyrimidinone; Chemical: DHPM; Chemical: copper sulphate
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: tetrahydrocurcumin; Chemical: THC; Chemical: tetrahydrodemethoxycurcumin; Chemical: THDC; Chemical: tetrahydrobisdemethoxycurcumin; Chemical: THBDC; Chemical: dihydropyrimidinone; Chemical: DHPM; Chemical: copper sulphate