Under Wraps Multi-Cache

A piece of public art kept well under wraps. Have a guess at it's make and model!

Due to another cache nearby, this has to be a multi. The final is over 200m but less than 500m away.

The cache can be found at N56 27.DEF  W2 58.UVW

There are two chemical equations and one word on the plinth. For clues using the word A=1, B=2, etc.

D = First letter of the word.

E = Second letter of the word.

F = Look at the first equation. Total number of Oxygens less number of Titaniums.

U = Look at both equations. Total number of Nitrogens plus the number of Titaniums.

V = Look at both equations. Total number of Oxygens in both outputs.

W = fourth letter of the word.