I am looking for a quick response on how to convert this graph to the form `asin[b(x-c)]+d`

I thought I understood how to get each value, but I cannot figure out which value I am getting wrong.

For D I have: `1`

For A I have: `-2` (Originally |2|)

For B I have: `2` 

For C I have: `π/4` 

You can view an image of the graph here: <https://i.stack.imgur.com/VDalQ.png>

The final equation I ended with is `-2sin[2x-(π/4)]+1`