(1)Benzopyrano(2,3-b)(1,5)benzodiazepin-13(6H)-one, 2-chloro-1-methyl-9-nitro-6-(phenylmethyl)- 115396-51-5 2-Chloro-1-methyl-9-nitro-6-(phenylmethyl)-(1)benzopyrano(2,3-b)(1,5)benzodiazepin-13(6H)-one