Using COC(=O)COc1ccc2c(c1)OCC21C(=O)N(C[C@H]2CCCO2)c2ccccc21 to produce O=C(O)COc1ccc2c(c1)OCC21C(=O)N(C[C@H]2CCCO2)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.