Using C=C(C)n1c(=O)n(C(CCC)CC(=O)OCC)c2ccccc21 to produce CCCC(CC(=O)OCC)n1c(=O)[nH]c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.