So I know it can't be said for sure but I was wondering if anyone could help me try to identify a chemical. So my friend was sold 2 sugar cube as LSD. He noticed a bitter taste and off white/ gray splotches on cube. Clearly this isn't LSD. He said he felt slight effects at an hour, and peaking at 2 hours. He said the peak lasted 5-6 hours. The drop off after the peak was very immediate, it went from peaking to basically sober in a half hour. He said it was reminiscent of LSD but not so benevolent. He also said it was very strong. I think the short duration would rule out most DOx's as far as I know. Any ideas?