you’ve opened up the lock and have entered another room in what seems to be a maze.

this room looks a like a laboratory. on the wall is a large poster of the periodic table. a few tables in the middle of the room has several empty bottles of various shapes. additional glass bottles are stored on shelves around the walls of the room. luckily, all seems to be empty.
in the far end of the room you see a door, fortunately not locked. as you walk through that door, you enter a room.
that next room is rather empty, except for a chair in front of a kind of operations panel on a large wall-mounted computer station that brings your thoughts to the era of the cold war.

there is a door at the far end of the room and of course this door is locked, but someone has scratched in numbers in it. no handles or anything. perhaps there is another way to open it?

as you look over to the operators panel you see that there are buttons labeled with various functions, but also buttons with numbers and letters ordered in numeric and alphabetic order, not according to modern keyboard layout. odd.
among the buttons on the panel there is a button labeled “open door”. you press it. nothing happens. but you find another switch labeled “on”, and as you hit that, the entire panel seems to wake up and most buttons light up. those who does not might have a broken light in them, because there does not seem to be any pattern.
when you press the button “open door” a text appears in a small display: “enter opening sequence:” and a prompt on the row below that awaits your input.