Schematic (3D and 2D) representation that molecular model of specific compounds of each formulae with COVID-19 proteins. A: M3 and E protein [ion channel], B: M3 and nsp13 [Helicase NCB site], C: S1 and nsp13 [Helicase ADP site], D: S1 and PLpro, E: X2 and Mpro, F: O2 and Mpro. M: MXSG, S: SGMH, X: XCH, O: Others.