Q54. The major product of the following reaction is $P . \mathrm { CH } _ { 3 } \mathrm { C } = \mathrm { C } - \mathrm { CH } _ { 3 } \xrightarrow [ \substack { \text { (ii) } \text { dil. } \mathrm { KMnO } _ { 4 } \\ 273 \mathrm {~K} } ] { \text { (i) } \mathrm { Na } / \mathrm { ing } ^ { 2 } \mathrm { NH } _ { 3 } }$ " Number of oxygen atoms present in product ' P ' is $\_\_\_\_$ (nearest integer)