An exact proof term for the current goal is CD_minus_mul_distrR {4} HSNo octonion_tag_fresh minus_HSNo conj_HSNo add_HSNo mul_HSNo HSNo_minus_HSNo HSNo_conj_HSNo HSNo_add_HSNo HSNo_mul_HSNo conj_minus_HSNo minus_add_HSNo minus_mul_HSNo_distrR minus_mul_HSNo_distrL.