ヘキサシアノ てつ さんカリウムであれば
hekisashianotetsusankariumudeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of ヘキサシアノ鉄酸カリウム

1. if it is potassium hexacyanoferrate(II); if it were potassium hexacyanoferrate(II)

Ba Conditional