format specifier associated to “description”

I’m using blastx version 2.2.27+ and the subsequent command

blastx -db nr -query fasta -outfmt '6 qseqid sgi sacc sseqid pident length mismatch gapopen qstart qend sstart send evalue bitscore stitle' -evalue 1e-10 -num_alignments 1  -num_threads 24 -out blast_farm_50_20.txt

that give me this output:

ERR1017187.18398    gi|319772954|gb|ADV73297.1| 100.00  50  0   0   2   151 76  125 6e-25    104
ERR1017187.23471    gi|1401185531|gb|PYV37130.1|    92.00   50  4   0   1   150 373 422 8e-22   97.4

Which contain every information that i need except the description of the match, below is the output of the default blastx (in bold the part that i need)

ref|WP_133160687.1|  **hypothetical protein [Candidatus Sulfotelmat..**.  97.4    2e-22
gb|PYX33850.1|  **hydrophobe/amphiphile efflux-1 family RND transpo...**  94.0    7e-20

what i need to add to the first command to obtain the description?