For a real challenge, calculate the PMI for the whole synthesis from

methylbenzoylformate. You will need to find the experimental details for the first

step to make the tosyl $($Ts$)$ hydrazine in a reference within the Winkler paper. Find

the amounts of each chemical used, find the densities of each solution used, and

calculate the masses from the volumes given. Then scale the first two steps to

correspond with the amount of precursor used in the last step.