Composition #2: USUBILLAGA, A., CASTELLANO, GD., HIDALGO, J., GUEVARA, C., MARTINOD, P., PAREDES, A. SOLAQUIDINE, A NEW STEROIDAL ALKALOID FROM SOLANUM-PSEUDOQUINA. PHYTOCHEMISTRY, 1977, vol. 16, no. 11, p. 18611862. DOI: 10.1016/0031-9422(71)85126-9.
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