Some scholars think that it may be guanidine derivatives but without any toxic side-effects of guanidine drugs.

有学者认为，可能是胍类衍生物，但又不具有胍类药的毒副作用。

youdao

Some scholars think that it may be guanidine derivatives but without any toxic side-effects of guanidine drugs.

有学者认为，可能是胍类衍生物，但又不具有胍类药的毒副作用。

youdao