Answer
$HOOC-CH_{2}-CH=CH-CH=CH-CH=C=CH-C \equiv C-C \equiv C -H$
Work Step by Step
Find the root name. Here, it is 'trideca' i.e. 13 C in a straight chain. Draw 13 C in straight chain and numbering them from 1 to 13. ending name is 'onic acid' which means COOH is present and the C1 carbon is the C of COOH group. Now, 3,5,7.8 tetraene means double bond present at C3, C5, C7 and C8 position. 10,12-diyon means at C10 and C12 position triple bond is present. Remaining valency of C atoms is filled with H.
Structure of mycomycine is as follows:
$HOOC-CH_{2}-CH=CH-CH=CH-CH=C=CH-C \equiv C-C \equiv C -H$
