Guanidine,(hexahydro-7-hydroxy-2-oxo-5,8-epoxy-5H-imidazo[2,1-b][1,3]oxazocin-3(2H)-ylidene)-,[5R-(5a,7a,8a,10aa)]-;5,8-Epoxy-5H-imidazo[2,1-b][1,3]oxazocine, guanidine deriv.
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