prov:value
| - alkylene group having 1 to 4 carbon atoms, R5 is an alkyl substituent having from 1 to 4 carbon atoms, and p is an integer from 1 to 4, (e)--SR6, where R6 is an alkyl substituent having from 1 to 6 carbon atoms, (f)--NH2, (g)--NHR7, where R7 is an alkyl substituent having 1 to 6 carbon atoms, (h) --NR8 R9, where R8 and R9 are independently chosen from alkyl substituents having 1 to 6 carbon atoms,
|