[4-(5-butanoyl-N-hydroxy-2-methylanilino)-2-ethyl-2-[(5-formyl-2-methylphenyl)carbamoyloxymethyl]-4-oxobutyl] N-[5-[(2-ethenoxyacetyl)-(2-oxoethoxy)amino]-2-methylphenyl]carbamate;[4-(5-butanoyl-N-hydroxy-2-methylanilino)-2-[(5-formyl-2-methylphenyl)carbamoyloxymethyl]-4-oxobutyl] N-[5-[(2-ethenoxyacetyl)-(2-oxoethoxy)amino]-2-methylphenyl]carbamate;1-[2-[(5-butanoyl-2-methyl-N-propanoylanilino)oxymethyl-ethylamino]ethyl-[2-[(5-formyl-2-methylphenyl)carbamoyloxy]propyl]amino]propan-2-yl N-[5-[(2-ethenoxyacetyl)-(2-oxoethoxy)amino]-2-methylphenyl]carbamate;1-[[(5-butanoyl-2-methyl-N-propanoylanilino)oxymethyl-methylamino]methyl-[2-[(5-formyl-2-methylphenyl)carbamoyloxy]propyl]amino]propan-2-yl N-[5-[(2-ethenoxyacetyl)-(2-oxoethoxy)amino]-2-methylphenyl]carbamate;[[5-[(2-ethenoxyacetyl)-(2-oxoethoxy)amino]-2-methylphenyl]carbamoyloxymethyl-[[(5-formyl-2-methylbenzoyl)-methylamino]methyl]amino]methyl N-(5-butanoyl-2-methylphenyl)carbamate;[[5-[(2-ethenoxyacetyl)-(2-oxoethoxy)amino]-2-methylphenyl]carbamoyloxymethyl-[2-[(5-formyl-2-methylbenzoyl)-propylamino]ethyl]amino]methyl N-(5-butanoyl-2-methylphenyl)carbamate