What do you think of this name?

[babyp]

I would like it pronounced see-arn-ah not see-en-na but don't want them to have trouble with it and have to correct people.

How would you spell it to get the most accurate pronunciation?

Here are some options of found on the net
Cianna
Ciana (this can be pronounced either see-AHN-ah or chee-AHN-ah though)
Siana
Sianna