How to rewrite this into nginx?

Server NGINX
1

Can someone show me how to rewrite this from Apache to nginx?!

Thanks you

.htaccess:

Options +FollowSymlinks
RewriteEngine On

RewriteBase /

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d [OR]
RewriteCond %{REQUEST_FILENAME} gallery\_remote2\.php
RewriteCond %{REQUEST_URI} !/main\.php$
RewriteRule .   -   [L]

RewriteCond %{THE_REQUEST} /d/([0-9]+)-([0-9]+)/([^/?]+)(\?.|\ .)
RewriteCond %{REQUEST_URI} !/main\.php$
RewriteRule .

/main.php?g2_view=core.DownloadItem&g2_itemId=%1&g2_serialNumber=%2&g2_fileName=%3
[QSA,L]
RewriteCond %{THE_REQUEST} /v/([^?]+)(?.|\ .)
RewriteCond %{REQUEST_URI} !/main.php$
RewriteRule . /main.php?g2_path=%1 [QSA,L]