According to other Iranian media, the targeted building was Iran’s consulate and ambassador’s residence.

https://www.zerohedge.com/geopolitical/iranian-embassy-syria-targeted-large-israeli-airstrikes-major-escalation

https://www.timesofisrael.com/liveblog_entry/iranian-media-claims-at-least-six-dead-in-alleged-israeli-strike-on-syria-consulate/

https://www.timesofisrael.com/liveblog_entry/alleged-israeli-strike-in-damascus-syria-targets-building-adjacent-to-iranian-embassy/

https://www.timesofisrael.com/liveblog_entry/senior-iranian-guard-corps-official-killed-in-alleged-israeli-strike-in-damascus-report/