Consider the following sequence of reactions to produce major product (A)
Molar mass of product (A) is ____ \( \mathrm{g} \ \mathrm{mol}^{-1}.\)
(Given molar mass in \(\mathrm{g} \ \mathrm{mol}^{-1}\) of \(\mathrm{C}: 12, \ \mathrm{H}: 1\),\(\mathrm{O}: 16, \mathrm{Br}: 80, \mathrm{~N}: 14, \mathrm{P}: 31\))