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Acknowledgments
R. G.-M. Thanks CONACYT for financial support (Project:
CB-2011-166747-Q), also to Dr. Francisco Delgado (ENCB-
IPN), Dr. Erick Cuevas (CCIQS-UAEMex) and Dr. Luis D.
Miranda (IQ-UNAM) for technical support respect to HRMS,
NMR and X-ray analysis respectively. Post-doctoral CONACYT
scholarship awarded to Dr. Alejandro Islas Jácome (CVU
176745, 290662_UG, 290735_UG) is gratefully acknowledged.
Pedro A. Cano acknowledges the CONACYT scholarship
(370144/304476).
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