I've imagined a mix of the two above suggestions, first [i:d30b5b4055]ang[/i:d30b5b4055] as in [i:d30b5b4055]hang[/i:d30b5b4055], then [i:d30b5b4055]gua[/i:d30b5b4055] with a hard [i:d30b5b4055]g[/i:d30b5b4055]. So:

[aŋ.gua]

Edit: Buzzy was quicker'n me. I think we're both imagining roughly the same pronounciation.

Edit again: Sloppy capitalization and formatting.