Using COC(=O)/C=C/c1c(N2CCCC(C=O)C2)nc2cc(CCc3nc(C(C)C)cs3)ccn2c1=O to produce COC(=O)CCc1c(N2CCCC(C=O)C2)nc2cc(CCc3nc(C(C)C)cs3)ccn2c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.