Declension table of ?gandhapāna

Neuter	Singular	Dual	Plural
Nominative	gandhapānam	gandhapāne	gandhapānāni
Vocative	gandhapāna	gandhapāne	gandhapānāni
Accusative	gandhapānam	gandhapāne	gandhapānāni
Instrumental	gandhapānena	gandhapānābhyām	gandhapānaiḥ
Dative	gandhapānāya	gandhapānābhyām	gandhapānebhyaḥ
Ablative	gandhapānāt	gandhapānābhyām	gandhapānebhyaḥ
Genitive	gandhapānasya	gandhapānayoḥ	gandhapānānām
Locative	gandhapāne	gandhapānayoḥ	gandhapāneṣu

Compound gandhapāna -

Adverb -gandhapānam -gandhapānāt