| http://www.w3.org/ns/prov#value | - Y is a secondary carbamate, R1 is a methylene group or alkyl group having 6???12 carbon atoms, R3 is an alkyl group having from 1 to 12 carbon atoms, optionally including oxygen or other heteroatoms, and R2, R4 and R5 are each independently H or alkyl of 1 to 4 carbon atoms; or
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