පහත දැක්වෙන සංයෝගයේ IUPAC නාමය කුමක් ද?
4-formylhex-1-yn-3-ol
4-formyl-3-hydroxyhex-1-yne
2-ethyl-3-hydroxy-4-ynepentanal
3-hydroxy-4-ethyl-1-ynepentanal
2-ethyl-3-hydroxypent-4-ynal