prov:value
| - r different and are a value of 0 or greater; provided at least two of R7, R8, R9, R10, R11, R12, R13, R14 and R15 are a hydrocarbon residue having greater than 2 carbon atoms in the same case of R7, R8, R11 an R14 or having greater than 2 pendant carbon atoms in the case of R9, R10, R12, R13 and R15.
|