Using N=C(N)Cc1ccc2c(c1)OCO2, CCOC(=O)C(C)C(=O)OCC to produce Cc1c(O)nc(Cc2ccc3c(c2)OCO3)nc1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.