1. — ethoxycarbonylmethyl 6-acetoxy-2,2-diphenyl-2H-benzo[h]chromene-5-carboxylate,

— Ethoxycarbonylmethyl-6-acetoxy-2,2-diphenyl-2H-benzo[h]chromen-5-carboxylat,

2. ethoxycarbonylmethyl 6-acetoxy-2,2-diphenyl-2H-benzo[h]chromene-5-carboxylate,

Ethoxycarbonylmethyl-6-acetoxy-2,2-diphenyl-2H-benzo[h]chromen-5-carboxylat,