prov:value
| - p, or carbamoyl group. [0184] In the General Formula (17), R5 is oxygen atom, sulfide atom, methylene group, ???NH???, ???SO???, ???SO2???, ???C(CF3)2???, or ???C(CH3)2???. [0185] In the General Formula (18), R6 is an alkyl group having 1 to 4 carbon atoms such as methyl group, ethyl group, propyl group or butyl group, or aryl group.
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