Trojan in WordPress

The Not32 find trojan in my site..

The antivirus plugin find this…
/themes/seo-basics/functions.php

There is no virus View line 189return maybe_unserialize(get_option(“sdstheme_{$section}_ads”));

There is no virus View line 380$headerAds = maybe_unserialize(get_option(“sdstheme_header_ads”));

There is no virus View line 381$sidebarAds = maybe_unserialize(get_option(“sdstheme_sidebar_ads”));

someone knows solution to this problem;