For each of the following compounds,write a condensed formula and also their bond-line formula.
$(a)$ $HOCH_{2}CH_{2}CH_{2}CH(CH_{3})CH(CH_{3})CH_{3}$
$(b)$ $N \equiv C-CH(OH)-C \equiv N$

(N/A) Condensed formula:
$(a)$ $HO(CH_{2})_{3}CH(CH_{3})CH(CH_{3})_{2}$
$(b)$ $HOCH(CN)_{2}$
Bond-line formula:
$(a)$ $A$ chain of $6$ carbons with an $-OH$ group at the first carbon,a methyl group at the $4^{th}$ carbon,and a methyl group at the $5^{th}$ carbon.
$(b)$ $A$ central carbon atom bonded to an $-OH$ group and two $-CN$ groups.