上游原料
ethyl 5-amino-1H-indole-2-carboxylate1-(chloromethyl)-2,3-dihydro-1H-benzo[e]indol-5-ol1,2,2a,3,9,9a-hexahydro-4H-benzo[e]cyclopropa[c]indol-4-one5-nitro-1-benzofuran-2-carboxylic acidethyl 5-{[(5-nitro-1-benzofuran-2-yl)carbonyl]amino}-1H-indole-2-carboxylate5-{[(5-nitro-1-benzofuran-2-yl)carbonyl]amino}-1H-indole-2-carboxylic acid
